Company lists · Data refreshed September 2026

Top 25 Cybersecurity pr firms worldwide

Name: Cybersecurity pr firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 11,501 companies tracked

RevenueBase identified 11,501 company matches for cybersecurity pr firms worldwide as of September 2026 and tracks 140,332 professional contacts across them, including 38,751 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for cybersecurity pr 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 cybersecurity pr 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built

11,501Companies

140,332Contacts tracked

38,751Verified emails

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The 25 largest cybersecurity pr firms worldwide

Ranked by team size

Top 25 of 11,501 company matches for cybersecurity pr firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Private Sector	Exact match	United StatesHQ recorded Sep 28, 2026	n/a	12,771 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Bugcrowd	Exact match	San Francisco, CA, United StatesHQ recorded Sep 28, 2026	n/a	3,649 contacts →
	Exact match “We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Sep 28, 2026	1,001-5,000	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
4	Bitdefender	Exact match	Bucuresti, RomaniaHQ recorded Sep 28, 2026	1,001-5,000	2,172 contacts →
	Exact match “Bitdefender is a cybersecurity leader delivering best-in-class threat prevention, detection, and response solutions worldwide.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Adfactors PR	Exact match	Mumbai, IndiaHQ recorded Sep 28, 2026	1,001-5,000	1,920 contacts →
	Exact match “Adfactors PR, founded in 1997, is India's largest Public Relations firm.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	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
7	Zerofox	Exact match	Baltimore, MD, United StatesHQ recorded Sep 28, 2026	501-1,000	904 contacts →
	Exact match “ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Ensign Infosecurity	Exact match	SingaporeHQ recorded Sep 28, 2026	501-1,000	888 contacts →
	Exact match “Ensign InfoSecurity is the largest pure-play end-to-end cybersecurity service provider in Asia.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Trustwave, A Levelblue Company	Exact match	Chicago, IL, United StatesHQ recorded Sep 28, 2026	501-1,000	874 contacts →
	Exact match “Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Cyderes	Exact match	Kansas City, MO, United StatesHQ recorded Sep 28, 2026	1,001-5,000	844 contacts →
	Exact match “Today’s threatscape is relentless.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Application Specialist Kompany ASK	Exact match	Lansing, MI, United StatesHQ recorded Sep 28, 2026	n/a	785 contacts →
	Exact match “ASK is now Convergence Networks!” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	SISA	Exact match	Bengaluru, IndiaHQ recorded Sep 28, 2026	201-500	743 contacts →
	Exact match “SISA is a global forensics-driven cybersecurity solutions company, trusted by leading organizations for securing their businesses with robust preventive, detective, and corrective…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Network Intelligence	Exact match	Plano, TX, United StatesHQ recorded Sep 28, 2026	501-1,000	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
14	I-Tracing	Exact match	Courbevoie, FranceHQ recorded Sep 28, 2026	1,001-5,000	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
15	Everfox	Exact match	Herndon, United StatesHQ recorded Sep 28, 2026	1,001-5,000	636 contacts →
	Exact match “Everfox delivers trusted connectivity to protect the world's most critical environments, safeguarding the sensitive information behind decision advantage.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Telos Corporation	Exact match	Ashburn, VA, United StatesHQ recorded Sep 28, 2026	501-1,000	629 contacts →
	Exact match “Telos Corporation (NASDAQ: TLS) empowers and protects the world’s most security-conscious organizations with efficient, adaptable, and secure solutions that safeguard people…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Advens	Exact match	Paris, ItalyHQ recorded Sep 28, 2026	501-1,000	586 contacts →
	Exact match “Advens is a European, independent and outstanding leader in cybersecurity.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Ultraviolet Cyber	Exact match	Mclean, VA, United StatesHQ recorded Sep 28, 2026	501-1,000	523 contacts →
	Exact match “UltraViolet Cyber is the only security operations partner that unifies red, blue, and purple team capabilities into one integrated program, finding what's vulnerable, stopping…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	own.security	Exact match	Paris, FranceHQ recorded Sep 28, 2026	51-200	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
20	Securityhq	Exact match	London, United KingdomHQ recorded Sep 28, 2026	501-1,000	502 contacts →
	Exact match “SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Protechmanize	Exact match	Thane, IndiaHQ recorded Sep 28, 2026	501-1,000	484 contacts →
	Exact match “At ProTechmanize, we’re committed to making cybersecurity simpler, stronger, and more future ready for the organizations we serve.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Aujas Cybersecurity	Exact match	Cupertino, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	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
23	ARETE	Exact match	Boca Raton, FL, United StatesHQ recorded Sep 28, 2026	201-500	462 contacts →
	Exact match “Arete helps organizations stay ahead of cyber threats with standardized, intelligence-led detection, response, resolution, and resilience capabilities.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Palo Alto Networks Unit 42	Exact match	Santa Clara, CA, United StatesHQ recorded Sep 28, 2026	5,001-10,000	441 contacts →
	Exact match “Palo Alto Networks Unit 42 brings together world-renowned threat researchers with an elite team of incident responders and security consultants to create an intelligence-driven…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Neosecure By SEK	Exact match	Retiro, ArgentinaHQ recorded Sep 28, 2026	501-1,000	414 contacts →
	Exact match “Con más de 20 años de experiencia, 750 colaboradores y una base de más de 650 clientes en la región, operamos en los mercados de Brasil, Chile, Argentina, Colombia y Perú, donde…” 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 “cybersecurity pr 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 11,501 cybersecurity pr firms worldwide

See the full list, filter by size, metro and specialty, and access 38,751 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity pr firms worldwide at a glance

As of Sep 28, 2026

27.6%Verified-email coverage

12.2Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

6,902

11-50

3,555

51-200

781

201-500

161

501-1,000

1,001-5,000

5,001-10,000

10001+

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 cybersecurity pr firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “cybersecurity pr 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 38,751 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.

Cybersecurity pr firms by location

90 lists · largest first

Every Cybersecurity pr firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “cybersecurity pr firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity pr firms are there worldwide?

RevenueBase identified 11,501 company matches for cybersecurity pr 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 cybersecurity pr firms?

The United States leads with 3,025 companies, followed by India (936) and the United Kingdom (729). Every cybersecurity pr firms list by country and city is linked on this page.

Which city has the most cybersecurity pr firms?

London leads with 308 company records, followed by Paris (132) and New York (127).

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 38,751 professional contacts with verified work emails tracked across these 11,501 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.