Company lists · Data refreshed September 2026
Top 25 Information security audit firms worldwide
RevenueBase identified 9,950 company matches for information security audit firms worldwide as of September 2026 and tracks 106,301 professional contacts across them, including 27,904 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for information security audit firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026. Country and city lists for information security audit firms follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest information security audit firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 12,771 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 2 | 2,222 contacts → | ||||
Exact match “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 3 | 1,378 contacts → | ||||
Exact match “We are established for enriching local content in designing, developing, and operating secure digital computing environments through Saudi talents, by fulfilling our role as a…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 4 | 1,232 contacts → | ||||
Exact match “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 5 | 798 contacts → | ||||
Exact match “A-LIGN is the leading provider of high-quality, efficient cybersecurity compliance programs.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 6 | 705 contacts → | ||||
Exact match “Get a free, powerful security assessment with personalised recommendations, the same analysis that costs from IT Consultancies.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 7 | 641 contacts → | ||||
Exact match “At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 8 | 639 contacts → | ||||
Exact match “I-TRACING, pure player and cybersecurity service provider leader in France, supports over 600 clients around the world in managing their cyber risks, from anticipating threats to…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 9 | 628 contacts → | ||||
Exact match “VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 10 | 525 contacts → | ||||
Exact match “Protection is Paramount!” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 11 | 506 contacts → | ||||
Exact match “Founded in 2008, OWN is a Pure Player in cybersecurity, with offices in Paris, Rennes and Toulouse, but with a presence throughout France with its fully remote employees.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 12 | 473 contacts → | ||||
Exact match “At Aujas Cybersecurity, we specialize in building and transforming cybersecurity postures to help businesses effectively mitigate risks.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 13 | 400 contacts → | ||||
Exact match “qSEAp is a CERT-IN empanelled, ISO 27001, SOC-2 Type2 and ISO 9001 certified Infosec organization founded in 2011 with a mission to deliver quality products, superior solutions…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 14 | 399 contacts → | ||||
Exact match “A SAFEWAY empresa que integra a plataforma de cibersegurança do Grupo Stefanini se une a Protega.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 15 | 398 contacts → | ||||
Exact match “ACPL Systems is a pure-play cybersecurity services company focused on helping organisations translate security investments into measurable outcomes.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 16 | 386 contacts → | ||||
Exact match “Progress is our motivation because we are convinced that it will lead us to a successful future – independent of industries, companies and social classes.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 17 | 382 contacts → | ||||
Exact match “NEVERHACK is a French group specialized in cybersecurity for over 40 years.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 18 | 365 contacts → | ||||
Exact match “Welcome to IBN Technologies, LLC, Your Trusted Partner in Cybersecurity, Cloud, and Finance Solutions With 26+ years of expertise, IBN Technologies leads in delivering integrated…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 19 | 363 contacts → | ||||
Exact match “eSec Forte® Technologies is a CMMi Level 3 certified Global Consulting and IT Security Services company with offerings across Cloud Security, Cyber Forensics, Malware Detection…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 20 | 359 contacts → | ||||
Exact match “Founded in 2010, Synetis is the leading independent French consultancy firm specialising in information systems security (ISS).” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 21 | 340 contacts → | ||||
Exact match “TechDefence Labs (TechD Cybersecurity Limited) Award-winning | Innovative | Visionary We empower organizations across the globe to secure their applications, networks, and digital…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 22 | 335 contacts → | ||||
Exact match “T A L A K U N C H I Networks Pvt.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 23 | 332 contacts → | ||||
Exact match “Prevent Breach & Minimize Impact” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 24 | 315 contacts → | ||||
Exact match “We deliver cybersecurity consulting, 24x7 operations and SaaS to leading companies in the Financial Services, Healthcare, Pharmaceuticals, Technology and Retail industries.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 25 | 315 contacts → | ||||
Exact match “NVISO is a cyber security services firm composed of outstanding security professionals - each has a specific field of expertise, ranging from security research and risk management…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “information security audit firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 9,950 information security audit firms worldwide
See the full list, filter by size, metro and specialty, and access 27,904 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Information security audit firms worldwide at a glance
As of Sep 28, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for information security audit firms are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “information security audit firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 27,904 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Information security audit firms by location
69 lists · largest firstEvery Information security audit firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Information security audit firms based in the United States2,398
- Information security audit firms based in India792
- Information security audit firms based in the United Kingdom622
- Information security audit firms based in France393
- Information security audit firms based in Canada335
- Information security audit firms based in Germany315
- Information security audit firms based in Australia301
- Information security audit firms based in Brazil254
- Information security audit firms based in the Netherlands219
- Information security audit firms based in Spain162
- Information security audit firms based in the United Arab Emirates128
- Information security audit firms based in Switzerland104
- Information security audit firms based in Mexico102
- Information security audit firms based in South Africa100
- Information security audit firms based in Poland98
- Information security audit firms based in Italy93
- Information security audit firms based in Israel88
- Information security audit firms based in Türkiye86
- Information security audit firms based in Belgium84
- Information security audit firms based in Chile77
- Information security audit firms based in Sweden77
- Information security audit firms based in Colombia60
- Information security audit firms based in Argentina56
- Information security audit firms based in Indonesia52
- Information security audit firms based in Saudi Arabia45
- Information security audit firms based in Austria44
- Information security audit firms based in New Zealand44
- Information security audit firms based in Romania42
- Information security audit firms based in Hungary36
- Information security audit firms based in Malaysia35
- Information security audit firms based in Czechia34
- Information security audit firms based in Ireland34
- Information security audit firms based in Denmark33
- Information security audit firms based in Portugal31
- Information security audit firms based in Ukraine28
Cities
- Information security audit firms based in London, United Kingdom219
- Information security audit firms based in Paris, France117
- Information security audit firms based in Bangalore, India93
- Information security audit firms based in Sao Paulo, Brazil91
- Information security audit firms based in Toronto, Canada82
- Information security audit firms based in Dubai, United Arab Emirates70
- Information security audit firms based in Sydney, Australia69
- Information security audit firms based in Pune, India67
- Information security audit firms based in Melbourne, Australia66
- Information security audit firms based in Atlanta, United States65
- Information security audit firms based in Hyderabad, India64
- Information security audit firms based in Mumbai, India63
- Information security audit firms based in New York, United States60
- Information security audit firms based in Tampa, United States50
- Information security audit firms based in Austin, United States46
- Information security audit firms based in Chennai, India45
- Information security audit firms based in Washington, United States45
- Information security audit firms based in Houston, United States44
- Information security audit firms based in Madrid, Spain42
- Information security audit firms based in Noida, India40
- Information security audit firms based in Chicago, United States39
- Information security audit firms based in Ahmedabad, India38
- Information security audit firms based in San Francisco, United States38
- Information security audit firms based in Stockholm, Sweden36
- Information security audit firms based in Ottawa, Canada33
- Information security audit firms based in Los Angeles, United States31
- Information security audit firms based in Calgary, Canada30
- Information security audit firms based in San Diego, United States30
- Information security audit firms based in Miami, United States29
- Information security audit firms based in Arlington, United States28
- Information security audit firms based in Riyadh, Saudi Arabia28
- Information security audit firms based in Barcelona, Spain27
- Information security audit firms based in Dallas, United States27
- Information security audit firms based in Tel Aviv, Israel26
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “information security audit firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many information security audit firms are there worldwide?
RevenueBase identified 9,950 company matches for information security audit firms worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Private Sector tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most information security audit firms?
The United States leads with 2,398 companies, followed by India (792) and the United Kingdom (622). Every information security audit firms list by country and city is linked on this page.
Which city has the most information security audit firms?
London leads with 224 company records, followed by Paris (117) and Sao Paulo (91).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 27,904 professional contacts with verified work emails tracked across these 9,950 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
Company intelligence · public preview
Top 25 information security audit firms worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 9,950 matching company records for information security audit firms worldwide, with 106,301 tracked contacts and 27,904 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 information security audit firms worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Private Sectorlockervault.com HQ: United StatesReported employees: Not recorded | United States | Not recorded | Exact match | 12,771 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 2 |  OPTIVoptiv.comHQ: Leawood, KS, United StatesReported employees: 1,001-5,000 | Leawood, KS, United States | 1,001-5,000 | Exact match | 2,222 contacts → |
“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Site سايتsite.saHQ: Al Nakheel, Saudi ArabiaReported employees: 501-1,000 | Al Nakheel, Saudi Arabia | 501-1,000 | Exact match | 1,378 contacts → |
“We are established for enriching local content in designing, developing, and operating secure digital computing environments through Saudi talents, by fulfilling our role as a…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Guidepoint Securityguidepointsecurity.comHQ: Reston, VA, United StatesReported employees: 1,001-5,000 | Reston, VA, United States | 1,001-5,000 | Exact match | 1,232 contacts → |
“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  A-Ligna-lign.comHQ: Tampa, FL, United StatesReported employees: 501-1,000 | Tampa, FL, United States | 501-1,000 | Exact match | 798 contacts → |
“A-LIGN is the leading provider of high-quality, efficient cybersecurity compliance programs.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  COBRAaudit.amazingsupport.co.ukHQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 705 contacts → |
“Get a free, powerful security assessment with personalised recommendations, the same analysis that costs from IT Consultancies.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Network Intelligencenetworkintelligence.aiHQ: Plano, TX, United StatesReported employees: 501-1,000 | Plano, TX, United States | 501-1,000 | Exact match | 641 contacts → |
“At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  I-Tracingi-tracing.comHQ: Courbevoie, FranceReported employees: 1,001-5,000 | Courbevoie, France | 1,001-5,000 | Exact match | 639 contacts → |
“I-TRACING, pure player and cybersecurity service provider leader in France, supports over 600 clients around the world in managing their cyber risks, from anticipating threats to…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Vikingcloudvikingcloud.comHQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 628 contacts → |
“VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Paramount Computer Systemsparamountassure.comHQ: Dubai, United Arab EmiratesReported employees: 201-500 | Dubai, United Arab Emirates | 201-500 | Exact match | 525 contacts → |
“Protection is Paramount!” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  own.securityown.securityHQ: Paris, FranceReported employees: 51-200 | Paris, France | 51-200 | Exact match | 506 contacts → |
“Founded in 2008, OWN is a Pure Player in cybersecurity, with offices in Paris, Rennes and Toulouse, but with a presence throughout France with its fully remote employees.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Aujas Cybersecurityaujas.comHQ: Cupertino, CA, United StatesReported employees: 1,001-5,000 | Cupertino, CA, United States | 1,001-5,000 | Exact match | 473 contacts → |
“At Aujas Cybersecurity, we specialize in building and transforming cybersecurity postures to help businesses effectively mitigate risks.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Qseap Infotech PVT LTDqseap.comHQ: Navi Mumbai, IndiaReported employees: 201-500 | Navi Mumbai, India | 201-500 | Exact match | 400 contacts → |
“qSEAp is a CERT-IN empanelled, ISO 27001, SOC-2 Type2 and ISO 9001 certified Infosec organization founded in 2011 with a mission to deliver quality products, superior solutions…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Safewaysafewayconsultoria.comHQ: Sao Paulo, BrazilReported employees: 201-500 | Sao Paulo, Brazil | 201-500 | Exact match | 399 contacts → |
“A SAFEWAY empresa que integra a plataforma de cibersegurança do Grupo Stefanini se une a Protega.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Acpl Systemsacpl.comHQ: Gurgaon, IndiaReported employees: 201-500 | Gurgaon, India | 201-500 | Exact match | 398 contacts → |
“ACPL Systems is a pure-play cybersecurity services company focused on helping organisations translate security investments into measurable outcomes.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  G Data Cyberdefensegdata.deHQ: Bochum, GermanyReported employees: 501-1,000 | Bochum, Germany | 501-1,000 | Exact match | 386 contacts → |
“Progress is our motivation because we are convinced that it will lead us to a successful future – independent of industries, companies and social classes.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Neverhackneverhack.comHQ: Paris, FranceReported employees: 1,001-5,000 | Paris, France | 1,001-5,000 | Exact match | 382 contacts → |
“NEVERHACK is a French group specialized in cybersecurity for over 40 years.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  IBN Technologiesibntech.comHQ: Miami, FL, United StatesReported employees: 51-200 | Miami, FL, United States | 51-200 | Exact match | 365 contacts → |
“Welcome to IBN Technologies, LLC, Your Trusted Partner in Cybersecurity, Cloud, and Finance Solutions With 26+ years of expertise, IBN Technologies leads in delivering integrated…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Esec Forte Technologiesesecforte.comHQ: Gurugram, IndiaReported employees: 201-500 | Gurugram, India | 201-500 | Exact match | 363 contacts → |
“eSec Forte® Technologies is a CMMi Level 3 certified Global Consulting and IT Security Services company with offerings across Cloud Security, Cyber Forensics, Malware Detection…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Synetissynetis.comHQ: Paris, FranceReported employees: 201-500 | Paris, France | 201-500 | Exact match | 359 contacts → |
“Founded in 2010, Synetis is the leading independent French consultancy firm specialising in information systems security (ISS).” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Techdefencetechdefencelabs.comHQ: Ahmedabad, IndiaReported employees: 201-500 | Ahmedabad, India | 201-500 | Exact match | 340 contacts → |
“TechDefence Labs (TechD Cybersecurity Limited) Award-winning | Innovative | Visionary We empower organizations across the globe to secure their applications, networks, and digital…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Talakunchi Networks PVT LTDtalakunchi.comHQ: Mumbai, IndiaReported employees: 201-500 | Mumbai, India | 201-500 | Exact match | 335 contacts → |
“T A L A K U N C H I Networks Pvt.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Truesectruesec.comHQ: SwedenReported employees: 201-500 | Sweden | 201-500 | Exact match | 332 contacts → |
“Prevent Breach & Minimize Impact” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Security Risk Advisorssra.ioHQ: Philadelphia, PA, United StatesReported employees: 201-500 | Philadelphia, PA, United States | 201-500 | Exact match | 315 contacts → |
“We deliver cybersecurity consulting, 24x7 operations and SaaS to leading companies in the Financial Services, Healthcare, Pharmaceuticals, Technology and Retail industries.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Nviso Securitynviso.euHQ: Brussels, BelgiumReported employees: 201-500 | Brussels, Belgium | 201-500 | Exact match | 315 contacts → |
“NVISO is a cyber security services firm composed of outstanding security professionals - each has a specific field of expertise, ranging from security research and risk management…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 9,950 company matches
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Information security audit firms: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
9,941 records in the displayed employee bands.
9 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 9,950 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Information security audit firms by location
69 lists · largest firstEvery Information security audit firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Information security audit firms based in the United States2,398
- Information security audit firms based in India792
- Information security audit firms based in the United Kingdom622
- Information security audit firms based in France393
- Information security audit firms based in Canada335
- Information security audit firms based in Germany315
- Information security audit firms based in Australia301
- Information security audit firms based in Brazil254
- Information security audit firms based in the Netherlands219
- Information security audit firms based in Spain162
- Information security audit firms based in the United Arab Emirates128
- Information security audit firms based in Switzerland104
- Information security audit firms based in Mexico102
- Information security audit firms based in South Africa100
- Information security audit firms based in Poland98
- Information security audit firms based in Italy93
- Information security audit firms based in Israel88
- Information security audit firms based in Türkiye86
- Information security audit firms based in Belgium84
- Information security audit firms based in Chile77
- Information security audit firms based in Sweden77
- Information security audit firms based in Colombia60
- Information security audit firms based in Argentina56
- Information security audit firms based in Indonesia52
- Information security audit firms based in Saudi Arabia45
- Information security audit firms based in Austria44
- Information security audit firms based in New Zealand44
- Information security audit firms based in Romania42
- Information security audit firms based in Hungary36
- Information security audit firms based in Malaysia35
- Information security audit firms based in Czechia34
- Information security audit firms based in Ireland34
- Information security audit firms based in Denmark33
- Information security audit firms based in Portugal31
- Information security audit firms based in Ukraine28
Cities
- Information security audit firms based in London, United Kingdom219
- Information security audit firms based in Paris, France117
- Information security audit firms based in Bangalore, India93
- Information security audit firms based in Sao Paulo, Brazil91
- Information security audit firms based in Toronto, Canada82
- Information security audit firms based in Dubai, United Arab Emirates70
- Information security audit firms based in Sydney, Australia69
- Information security audit firms based in Pune, India67
- Information security audit firms based in Melbourne, Australia66
- Information security audit firms based in Atlanta, United States65
- Information security audit firms based in Hyderabad, India64
- Information security audit firms based in Mumbai, India63
- Information security audit firms based in New York, United States60
- Information security audit firms based in Tampa, United States50
- Information security audit firms based in Austin, United States46
- Information security audit firms based in Chennai, India45
- Information security audit firms based in Washington, United States45
- Information security audit firms based in Houston, United States44
- Information security audit firms based in Madrid, Spain42
- Information security audit firms based in Noida, India40
- Information security audit firms based in Chicago, United States39
- Information security audit firms based in Ahmedabad, India38
- Information security audit firms based in San Francisco, United States38
- Information security audit firms based in Stockholm, Sweden36
- Information security audit firms based in Ottawa, Canada33
- Information security audit firms based in Los Angeles, United States31
- Information security audit firms based in Calgary, Canada30
- Information security audit firms based in San Diego, United States30
- Information security audit firms based in Miami, United States29
- Information security audit firms based in Arlington, United States28
- Information security audit firms based in Riyadh, Saudi Arabia28
- Information security audit firms based in Barcelona, Spain27
- Information security audit firms based in Dallas, United States27
- Information security audit firms based in Tel Aviv, Israel26
Questions about this company list
What does Exact match mean for information security audit firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many information security audit firms did RevenueBase find worldwide?
The saved snapshot records 9,950 matching company records, 106,301 tracked contacts and 27,904 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 information security audit firms worldwide. Snapshot: September 28, 2026. https://revenuebase.ai/companies/browse/information-security-audit-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 information security audit firms worldwide
RevenueBase records 9,950 matching company records for information security audit firms worldwide, with 106,301 tracked contacts and 27,904 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 information security audit firms worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Private Sectorlockervault.com HQ: United StatesReported employees: Not recorded | United States | Not recorded | Exact match | 12,771 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 2 | OPTIVoptiv.com HQ: Leawood, KS, United StatesReported employees: 1,001-5,000 | Leawood, KS, United States | 1,001-5,000 | Exact match | 2,222 contacts → |
“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Site سايتsite.sa HQ: Al Nakheel, Saudi ArabiaReported employees: 501-1,000 | Al Nakheel, Saudi Arabia | 501-1,000 | Exact match | 1,378 contacts → |
“We are established for enriching local content in designing, developing, and operating secure digital computing environments through Saudi talents, by fulfilling our role as a…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Guidepoint Securityguidepointsecurity.com HQ: Reston, VA, United StatesReported employees: 1,001-5,000 | Reston, VA, United States | 1,001-5,000 | Exact match | 1,232 contacts → |
“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | A-Ligna-lign.com HQ: Tampa, FL, United StatesReported employees: 501-1,000 | Tampa, FL, United States | 501-1,000 | Exact match | 798 contacts → |
“A-LIGN is the leading provider of high-quality, efficient cybersecurity compliance programs.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | COBRAaudit.amazingsupport.co.uk HQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 705 contacts → |
“Get a free, powerful security assessment with personalised recommendations, the same analysis that costs from IT Consultancies.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Network Intelligencenetworkintelligence.ai HQ: Plano, TX, United StatesReported employees: 501-1,000 | Plano, TX, United States | 501-1,000 | Exact match | 641 contacts → |
“At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | I-Tracingi-tracing.com HQ: Courbevoie, FranceReported employees: 1,001-5,000 | Courbevoie, France | 1,001-5,000 | Exact match | 639 contacts → |
“I-TRACING, pure player and cybersecurity service provider leader in France, supports over 600 clients around the world in managing their cyber risks, from anticipating threats to…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Vikingcloudvikingcloud.com HQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 628 contacts → |
“VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Paramount Computer Systemsparamountassure.com HQ: Dubai, United Arab EmiratesReported employees: 201-500 | Dubai, United Arab Emirates | 201-500 | Exact match | 525 contacts → |
“Protection is Paramount!” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | own.securityown.security HQ: Paris, FranceReported employees: 51-200 | Paris, France | 51-200 | Exact match | 506 contacts → |
“Founded in 2008, OWN is a Pure Player in cybersecurity, with offices in Paris, Rennes and Toulouse, but with a presence throughout France with its fully remote employees.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Aujas Cybersecurityaujas.com HQ: Cupertino, CA, United StatesReported employees: 1,001-5,000 | Cupertino, CA, United States | 1,001-5,000 | Exact match | 473 contacts → |
“At Aujas Cybersecurity, we specialize in building and transforming cybersecurity postures to help businesses effectively mitigate risks.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Qseap Infotech PVT LTDqseap.com HQ: Navi Mumbai, IndiaReported employees: 201-500 | Navi Mumbai, India | 201-500 | Exact match | 400 contacts → |
“qSEAp is a CERT-IN empanelled, ISO 27001, SOC-2 Type2 and ISO 9001 certified Infosec organization founded in 2011 with a mission to deliver quality products, superior solutions…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Safewaysafewayconsultoria.com HQ: Sao Paulo, BrazilReported employees: 201-500 | Sao Paulo, Brazil | 201-500 | Exact match | 399 contacts → |
“A SAFEWAY empresa que integra a plataforma de cibersegurança do Grupo Stefanini se une a Protega.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Acpl Systemsacpl.com HQ: Gurgaon, IndiaReported employees: 201-500 | Gurgaon, India | 201-500 | Exact match | 398 contacts → |
“ACPL Systems is a pure-play cybersecurity services company focused on helping organisations translate security investments into measurable outcomes.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | G Data Cyberdefensegdata.de HQ: Bochum, GermanyReported employees: 501-1,000 | Bochum, Germany | 501-1,000 | Exact match | 386 contacts → |
“Progress is our motivation because we are convinced that it will lead us to a successful future – independent of industries, companies and social classes.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Neverhackneverhack.com HQ: Paris, FranceReported employees: 1,001-5,000 | Paris, France | 1,001-5,000 | Exact match | 382 contacts → |
“NEVERHACK is a French group specialized in cybersecurity for over 40 years.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | IBN Technologiesibntech.com HQ: Miami, FL, United StatesReported employees: 51-200 | Miami, FL, United States | 51-200 | Exact match | 365 contacts → |
“Welcome to IBN Technologies, LLC, Your Trusted Partner in Cybersecurity, Cloud, and Finance Solutions With 26+ years of expertise, IBN Technologies leads in delivering integrated…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Esec Forte Technologiesesecforte.com HQ: Gurugram, IndiaReported employees: 201-500 | Gurugram, India | 201-500 | Exact match | 363 contacts → |
“eSec Forte® Technologies is a CMMi Level 3 certified Global Consulting and IT Security Services company with offerings across Cloud Security, Cyber Forensics, Malware Detection…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Synetissynetis.com HQ: Paris, FranceReported employees: 201-500 | Paris, France | 201-500 | Exact match | 359 contacts → |
“Founded in 2010, Synetis is the leading independent French consultancy firm specialising in information systems security (ISS).” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Techdefencetechdefencelabs.com HQ: Ahmedabad, IndiaReported employees: 201-500 | Ahmedabad, India | 201-500 | Exact match | 340 contacts → |
“TechDefence Labs (TechD Cybersecurity Limited) Award-winning | Innovative | Visionary We empower organizations across the globe to secure their applications, networks, and digital…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Talakunchi Networks PVT LTDtalakunchi.com HQ: Mumbai, IndiaReported employees: 201-500 | Mumbai, India | 201-500 | Exact match | 335 contacts → |
“T A L A K U N C H I Networks Pvt.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Truesectruesec.com HQ: SwedenReported employees: 201-500 | Sweden | 201-500 | Exact match | 332 contacts → |
“Prevent Breach & Minimize Impact” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Security Risk Advisorssra.io HQ: Philadelphia, PA, United StatesReported employees: 201-500 | Philadelphia, PA, United States | 201-500 | Exact match | 315 contacts → |
“We deliver cybersecurity consulting, 24x7 operations and SaaS to leading companies in the Financial Services, Healthcare, Pharmaceuticals, Technology and Retail industries.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Nviso Securitynviso.eu HQ: Brussels, BelgiumReported employees: 201-500 | Brussels, Belgium | 201-500 | Exact match | 315 contacts → |
“NVISO is a cyber security services firm composed of outstanding security professionals - each has a specific field of expertise, ranging from security research and risk management…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 9,950 company matches
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Information security audit firms: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
9,941 records in the displayed employee bands.
9 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 9,950 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Information security audit firms by location
69 lists · largest firstEvery Information security audit firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Information security audit firms based in the United States2,398
- Information security audit firms based in India792
- Information security audit firms based in the United Kingdom622
- Information security audit firms based in France393
- Information security audit firms based in Canada335
- Information security audit firms based in Germany315
- Information security audit firms based in Australia301
- Information security audit firms based in Brazil254
- Information security audit firms based in the Netherlands219
- Information security audit firms based in Spain162
- Information security audit firms based in the United Arab Emirates128
- Information security audit firms based in Switzerland104
- Information security audit firms based in Mexico102
- Information security audit firms based in South Africa100
- Information security audit firms based in Poland98
- Information security audit firms based in Italy93
- Information security audit firms based in Israel88
- Information security audit firms based in Türkiye86
- Information security audit firms based in Belgium84
- Information security audit firms based in Chile77
- Information security audit firms based in Sweden77
- Information security audit firms based in Colombia60
- Information security audit firms based in Argentina56
- Information security audit firms based in Indonesia52
- Information security audit firms based in Saudi Arabia45
- Information security audit firms based in Austria44
- Information security audit firms based in New Zealand44
- Information security audit firms based in Romania42
- Information security audit firms based in Hungary36
- Information security audit firms based in Malaysia35
- Information security audit firms based in Czechia34
- Information security audit firms based in Ireland34
- Information security audit firms based in Denmark33
- Information security audit firms based in Portugal31
- Information security audit firms based in Ukraine28
Cities
- Information security audit firms based in London, United Kingdom219
- Information security audit firms based in Paris, France117
- Information security audit firms based in Bangalore, India93
- Information security audit firms based in Sao Paulo, Brazil91
- Information security audit firms based in Toronto, Canada82
- Information security audit firms based in Dubai, United Arab Emirates70
- Information security audit firms based in Sydney, Australia69
- Information security audit firms based in Pune, India67
- Information security audit firms based in Melbourne, Australia66
- Information security audit firms based in Atlanta, United States65
- Information security audit firms based in Hyderabad, India64
- Information security audit firms based in Mumbai, India63
- Information security audit firms based in New York, United States60
- Information security audit firms based in Tampa, United States50
- Information security audit firms based in Austin, United States46
- Information security audit firms based in Chennai, India45
- Information security audit firms based in Washington, United States45
- Information security audit firms based in Houston, United States44
- Information security audit firms based in Madrid, Spain42
- Information security audit firms based in Noida, India40
- Information security audit firms based in Chicago, United States39
- Information security audit firms based in Ahmedabad, India38
- Information security audit firms based in San Francisco, United States38
- Information security audit firms based in Stockholm, Sweden36
- Information security audit firms based in Ottawa, Canada33
- Information security audit firms based in Los Angeles, United States31
- Information security audit firms based in Calgary, Canada30
- Information security audit firms based in San Diego, United States30
- Information security audit firms based in Miami, United States29
- Information security audit firms based in Arlington, United States28
- Information security audit firms based in Riyadh, Saudi Arabia28
- Information security audit firms based in Barcelona, Spain27
- Information security audit firms based in Dallas, United States27
- Information security audit firms based in Tel Aviv, Israel26
Questions about this company list
What does Exact match mean for information security audit firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many information security audit firms did RevenueBase find worldwide?
The saved snapshot records 9,950 matching company records, 106,301 tracked contacts and 27,904 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 information security audit firms worldwide. Snapshot: September 28, 2026. https://revenuebase.ai/companies/browse/information-security-audit-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗