Company lists · Data refreshed October 2026
Top 25 Cyber security companies based in Chicago, United States
RevenueBase identified 77 company matches for cyber security companies associated with Chicago, United States as of October 2026 and tracks 3,204 professional contacts across them, including 1,701 with verified work emails. Across the United States, New York is the largest hub for this category (155 companies); Chicago has 77.
This list covers company matches for cyber security companies associated with Chicago, United States, 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 October 1, 2026.
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 cyber security companies based in Chicago, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 947 contacts → | ||||
Exact match “Coalfire is the premier Cybersecurity and Compliance Services leader for the tech, healthcare, and finance industries.(This page is maintained by Marketing.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 2 | 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 · Oct 1, 2026 · View company records in RevenueBase | |||||
| 3 | 628 contacts → | ||||
Exact match “VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 4 | 166 contacts → | ||||
Exact match “Evolve Security is a technical cybersecurity firm and the home of Evolve Academy, offering holistic and advanced cybersecurity training and continuously ranked #1 in the U.S.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 5 | 88 contacts → | ||||
Exact match “CrossRealms International is a Cybersecurity-First company operating across the United States, Europe, MENA region, and Asia.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 6 | 69 contacts → | ||||
Exact match “Experiencing a security incident?” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 7 | 32 contacts → | ||||
Exact match “We’ve moved!” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 8 | 27 contacts → | ||||
Exact match “In today’s digitally connected world, cyber security plays a crucial role.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 9 | 21 contacts → | ||||
Exact match “At Ravenswood Technology Group, we don’t just offer our customers cybersecurity solutions – we deliver value and expertise you can rely on as needs and risks change.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 10 | 10 contacts → | ||||
Exact match “Cyber threats are relentless, and security teams are overwhelmed.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 11 | 10 contacts → | ||||
Exact match “ArxNimbus brings visibility to every organization’s cybersecurity program, radically advancing how businesses understand and optimize for real resilience.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 12 | 10 contacts → | ||||
Exact match “HCISS is an AI-Powered Cybersecurity company focused on helping organizations secure digital systems, sensitive data, and critical operations in an increasingly complex threat…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 13 | 9 contacts → | ||||
Exact match “HTA Technology Security Consulting (HTA) is a certified Woman-Owned, Small, Disadvantaged, Minority business with offices in Chicago, IL, and the Washington DC corridor.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 14 | 9 contacts → | ||||
Exact match “Data Defenders is at the forefront of Managed Cybersecurity Operations Providers (MCOP), specializing in safeguarding municipalities through our exclusive Regional Security…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 15 | 8 contacts → | ||||
Exact match “DataGuard Cybersecurity Without The Complexity DataGuard uses state-of-the-art industry resources to implement a multi-layer defense for each client’s unique cyber security needs.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 16 | 7 contacts → | ||||
Exact match “At Cyber Bark, we bring 100 years of collective experience to the table, serving businesses across the US from our base in Illinois.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 17 | 7 contacts → | ||||
Exact match “Amol Solutions strives to be a leader in cybersecurity services for organizations of all sizes.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 18 | 6 contacts → | ||||
Exact match “Clairos is a cybersecurity company that helps organizations build stronger, more manageable security programs through a practical, tailored approach.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 19 | 6 contacts → | ||||
Exact match “Not auditors but real hackers.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 20 | 5 contacts → | ||||
Exact match “Welcome to Network Aegis!” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 21 | 5 contacts → | ||||
Exact match “TeamWerks is an IT company based in the United States.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 22 | 4 contacts → | ||||
Exact match “Cybersecurity for small businesses.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 23 | 4 contacts → | ||||
Exact match “Apex IT and Cybersecurity Solutions Inc is a leading Technology and Cybersecurity services firm based in Chicago, IL.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 24 | 4 contacts → | ||||
Exact match “CyberMetis has collected some of the industry’s best minds and tools.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 25 | 4 contacts → | ||||
Exact match “Wolf Point Security is a cyber security consulting firm, plain and simple.” Recorded in the RevenueBase company graph · Oct 1, 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 “cyber security companies”. 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 77 cyber security companies based in Chicago, United States
See the full list, filter by size, metro and specialty, and access 1,701 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Cyber security companies based in Chicago, United States at a glance
As of Oct 1, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 77 companies.
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.
- What qualifies
- Company records associated with Chicago, United States whose business descriptions match “cyber security companies” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 1,701 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 October 1, 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.
Cyber security companies by metro in the United States
- Cyber security companies in New York155
- Cyber security companies in Atlanta94
- Cyber security companies in Washington94
- Cyber security companies in Austin91
- Cyber security companies in Miami82
- Cyber security companies in Houston80
- Cyber security companies in Dallas77
- Cyber security companies in San Francisco75
- Cyber security companies in Tampa66
- Cyber security companies in Arlington51
- Cyber security companies in Columbia48
- Cyber security companies in Las Vegas44
- Cyber security companies in San Diego44
- Cyber security companies in Boston43
- Cyber security companies in Denver43
- Cyber security companies in Los Angeles42
- Cyber security companies in Orlando42
- Cyber security companies in Reston42
- Cyber security companies in Charlotte40
- Cyber security companies in San Antonio40
- Cyber security companies in Baltimore34
- Cyber security companies in Seattle34
- Cyber security companies in Fairfax33
- Cyber security companies in Phoenix33
- Cyber security companies in Huntsville32
- Cyber security companies in Mclean32
- Cyber security companies in Alexandria30
- Cyber security companies in San Jose29
- Cyber security companies in Wilmington29
- Cyber security companies in Plano28
- Cyber security companies in Scottsdale27
- Cyber security companies in Ashburn26
- Cyber security companies in Colorado Springs26
- Cyber security companies in Herndon26
- Cyber security companies in Dover25
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 “cyber security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many cyber security companies are there based in Chicago, United States?
RevenueBase identified 77 company matches for cyber security companies associated with Chicago, United States as of October 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?
Coalfire tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United States has the most cyber security companies?
New York leads the United States with 155 company records, followed by Atlanta (94) and Washington (94). Chicago has 77.
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 1,701 professional contacts with verified work emails tracked across these 77 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 October 1, 2026.
Ready to reach these companies? Verified emails and direct dials for all 77 cyber security companies based in Chicago, United States. Start with a free account, no credit card.
Download this list →Related lists
Cyber security companies by geography
- Cyber security companies based in Buenos Aires, Argentina
- Cyber security companies based in Brisbane, Australia
- Cyber security companies based in Canberra, Australia
- Cyber security companies based in Melbourne, Australia
- Cyber security companies based in Sydney, Australia
- Cyber security companies based in Belo Horizonte, Brazil
- Cyber security companies based in Brasilia, Brazil
- Cyber security companies based in Rio De Janeiro, Brazil
- Cyber security companies based in Sao Paulo, Brazil
- Cyber security companies based in Calgary, Canada
- Cyber security companies based in Montreal, Canada
- Cyber security companies based in Ottawa, Canada
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Cyber security companies based in Buenos Aires, Argentina
- Cyber security companies based in Brisbane, Australia
- Cyber security companies based in Canberra, Australia
- Cyber security companies based in Melbourne, Australia
- Cyber security companies based in Sydney, Australia
- Cyber security companies based in Belo Horizonte, Brazil
Company intelligence · public preview
Top 25 cyber security companies based in Chicago, United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 77 matching company records for cyber security companies based in Chicago, United States, with 3,204 tracked contacts and 1,701 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: October 1, 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 cyber security companies based in Chicago, United States
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 |  Coalfirecoalfire.comHQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 947 contacts → |
“Coalfire is the premier Cybersecurity and Compliance Services leader for the tech, healthcare, and finance industries.(This page is maintained by Marketing.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Trustwave, A Levelblue Companylevelblue.comHQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 874 contacts → |
“Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  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 · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Evolve Security Academyevolvesecurity.comHQ: Chicago, IL, United StatesReported employees: Not recorded | Chicago, IL, United States | Not recorded | Exact match | 166 contacts → |
“Evolve Security is a technical cybersecurity firm and the home of Evolve Academy, offering holistic and advanced cybersecurity training and continuously ranked #1 in the U.S.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Crossrealms Internationalcrossrealms.comHQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 88 contacts → |
“CrossRealms International is a Cybersecurity-First company operating across the United States, Europe, MENA region, and Asia.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Entaraentaracorp.com HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 69 contacts → |
“Experiencing a security incident?” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Onshore Security A Cybermaxx Companyonshore.comHQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 32 contacts → |
“We’ve moved!” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Abira Securityabirasecurity.comHQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 27 contacts → |
“In today’s digitally connected world, cyber security plays a crucial role.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Ravenswood Technology Groupravenswoodtechnology.comHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 21 contacts → |
“At Ravenswood Technology Group, we don’t just offer our customers cybersecurity solutions – we deliver value and expertise you can rely on as needs and risks change.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Impeliximpelix.comHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 10 contacts → |
“Cyber threats are relentless, and security teams are overwhelmed.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Arxnimbusarxnimbus.comHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 10 contacts → |
“ArxNimbus brings visibility to every organization’s cybersecurity program, radically advancing how businesses understand and optimize for real resilience.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Hciss, LLC Bsecaenergyhciss.ioHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 10 contacts → |
“HCISS is an AI-Powered Cybersecurity company focused on helping organizations secure digital systems, sensitive data, and critical operations in an increasingly complex threat…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Harrington Technology & Associates, INChta-inc.comHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 9 contacts → |
“HTA Technology Security Consulting (HTA) is a certified Woman-Owned, Small, Disadvantaged, Minority business with offices in Chicago, IL, and the Washington DC corridor.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Data Defenders, LLCdata-defenders.comHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 9 contacts → |
“Data Defenders is at the forefront of Managed Cybersecurity Operations Providers (MCOP), specializing in safeguarding municipalities through our exclusive Regional Security…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Dataguarddata-guard365.comHQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 8 contacts → |
“DataGuard Cybersecurity Without The Complexity DataGuard uses state-of-the-art industry resources to implement a multi-layer defense for each client’s unique cyber security needs.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Cyber Bark LLCcyberbark.comHQ: Chicago, United StatesReported employees: 51-200 | Chicago, United States | 51-200 | Exact match | 7 contacts → |
“At Cyber Bark, we bring 100 years of collective experience to the table, serving businesses across the US from our base in Illinois.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Amol Solutionsamolsolutions.comHQ: Chicago, IL, United StatesReported employees: 1-10 | Chicago, IL, United States | 1-10 | Exact match | 7 contacts → |
“Amol Solutions strives to be a leader in cybersecurity services for organizations of all sizes.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Clairosclairos.comHQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 6 contacts → |
“Clairos is a cybersecurity company that helps organizations build stronger, more manageable security programs through a practical, tailored approach.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Hellfire Securityhellfiresecurity.comHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 6 contacts → |
“Not auditors but real hackers.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Network Aegisnetworkaegis.netHQ: Chicago, IL, United StatesReported employees: 1-10 | Chicago, IL, United States | 1-10 | Exact match | 5 contacts → |
“Welcome to Network Aegis!” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Teamwerksteamwerks.comHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 5 contacts → |
“TeamWerks is an IT company based in the United States.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Cyber Pop-Upcyberpopup.comHQ: Chicago, IL, United StatesReported employees: 1-10 | Chicago, IL, United States | 1-10 | Exact match | 4 contacts → |
“Cybersecurity for small businesses.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Apex IT And Cybersecurity Solutionsapexcybersecurity.orgHQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 4 contacts → |
“Apex IT and Cybersecurity Solutions Inc is a leading Technology and Cybersecurity services firm based in Chicago, IL.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Cybermetiscybermetis.ioHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 4 contacts → |
“CyberMetis has collected some of the industry’s best minds and tools.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Wolf Point Securitywolfpointsecurity.comHQ: Chicago, United StatesReported employees: 1-10 | Chicago, United States | 1-10 | Exact match | 4 contacts → |
“Wolf Point Security is a cyber security consulting firm, plain and simple.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 77 company matches
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Cyber security companies: dataset insights
October 1, 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
77 records in the displayed employee bands.
0 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 United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 77 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: October 1, 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 ↗
Cyber security companies by metro in the United States
- Cyber security companies in New York155
- Cyber security companies in Atlanta94
- Cyber security companies in Washington94
- Cyber security companies in Austin91
- Cyber security companies in Miami82
- Cyber security companies in Houston80
- Cyber security companies in Dallas77
- Cyber security companies in San Francisco75
- Cyber security companies in Tampa66
- Cyber security companies in Arlington51
- Cyber security companies in Columbia48
- Cyber security companies in Las Vegas44
- Cyber security companies in San Diego44
- Cyber security companies in Boston43
- Cyber security companies in Denver43
- Cyber security companies in Los Angeles42
- Cyber security companies in Orlando42
- Cyber security companies in Reston42
- Cyber security companies in Charlotte40
- Cyber security companies in San Antonio40
- Cyber security companies in Baltimore34
- Cyber security companies in Seattle34
- Cyber security companies in Fairfax33
- Cyber security companies in Phoenix33
- Cyber security companies in Huntsville32
- Cyber security companies in Mclean32
- Cyber security companies in Alexandria30
- Cyber security companies in San Jose29
- Cyber security companies in Wilmington29
- Cyber security companies in Plano28
- Cyber security companies in Scottsdale27
- Cyber security companies in Ashburn26
- Cyber security companies in Colorado Springs26
- Cyber security companies in Herndon26
- Cyber security companies in Dover25
Questions about this company list
What does Exact match mean for cyber security companies?
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 cyber security companies did RevenueBase find based in Chicago, United States?
The saved snapshot records 77 matching company records, 3,204 tracked contacts and 1,701 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: October 1, 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
Cyber security companies by geography
- Cyber security companies based in Buenos Aires, Argentina
- Cyber security companies based in Brisbane, Australia
- Cyber security companies based in Canberra, Australia
- Cyber security companies based in Melbourne, Australia
- Cyber security companies based in Sydney, Australia
- Cyber security companies based in Belo Horizonte, Brazil
- Cyber security companies based in Brasilia, Brazil
- Cyber security companies based in Rio De Janeiro, Brazil
- Cyber security companies based in Sao Paulo, Brazil
- Cyber security companies based in Calgary, Canada
- Cyber security companies based in Montreal, Canada
- Cyber security companies based in Ottawa, Canada
Cite this list
RevenueBase Data Team. Top 25 cyber security companies based in Chicago, United States. Snapshot: October 1, 2026. https://revenuebase.ai/companies/cyber-security-companies/united-states/chicago.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
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- Cyber security companies based in Buenos Aires, Argentina
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Company intelligence · public preview
Top 25 cyber security companies based in Chicago, United States
RevenueBase records 77 matching company records for cyber security companies based in Chicago, United States, with 3,204 tracked contacts and 1,701 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: October 1, 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 cyber security companies based in Chicago, United States
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 | Coalfirecoalfire.com HQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 947 contacts → |
“Coalfire is the premier Cybersecurity and Compliance Services leader for the tech, healthcare, and finance industries.(This page is maintained by Marketing.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Trustwave, A Levelblue Companylevelblue.com HQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 874 contacts → |
“Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | 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 · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Evolve Security Academyevolvesecurity.com HQ: Chicago, IL, United StatesReported employees: Not recorded | Chicago, IL, United States | Not recorded | Exact match | 166 contacts → |
“Evolve Security is a technical cybersecurity firm and the home of Evolve Academy, offering holistic and advanced cybersecurity training and continuously ranked #1 in the U.S.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Crossrealms Internationalcrossrealms.com HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 88 contacts → |
“CrossRealms International is a Cybersecurity-First company operating across the United States, Europe, MENA region, and Asia.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Entaraentaracorp.com HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 69 contacts → |
“Experiencing a security incident?” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Onshore Security A Cybermaxx Companyonshore.com HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 32 contacts → |
“We’ve moved!” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Abira Securityabirasecurity.com HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 27 contacts → |
“In today’s digitally connected world, cyber security plays a crucial role.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Ravenswood Technology Groupravenswoodtechnology.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 21 contacts → |
“At Ravenswood Technology Group, we don’t just offer our customers cybersecurity solutions – we deliver value and expertise you can rely on as needs and risks change.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Impeliximpelix.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 10 contacts → |
“Cyber threats are relentless, and security teams are overwhelmed.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Arxnimbusarxnimbus.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 10 contacts → |
“ArxNimbus brings visibility to every organization’s cybersecurity program, radically advancing how businesses understand and optimize for real resilience.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Hciss, LLC Bsecaenergyhciss.io HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 10 contacts → |
“HCISS is an AI-Powered Cybersecurity company focused on helping organizations secure digital systems, sensitive data, and critical operations in an increasingly complex threat…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Harrington Technology & Associates, INChta-inc.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 9 contacts → |
“HTA Technology Security Consulting (HTA) is a certified Woman-Owned, Small, Disadvantaged, Minority business with offices in Chicago, IL, and the Washington DC corridor.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Data Defenders, LLCdata-defenders.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 9 contacts → |
“Data Defenders is at the forefront of Managed Cybersecurity Operations Providers (MCOP), specializing in safeguarding municipalities through our exclusive Regional Security…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Dataguarddata-guard365.com HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 8 contacts → |
“DataGuard Cybersecurity Without The Complexity DataGuard uses state-of-the-art industry resources to implement a multi-layer defense for each client’s unique cyber security needs.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Cyber Bark LLCcyberbark.com HQ: Chicago, United StatesReported employees: 51-200 | Chicago, United States | 51-200 | Exact match | 7 contacts → |
“At Cyber Bark, we bring 100 years of collective experience to the table, serving businesses across the US from our base in Illinois.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Amol Solutionsamolsolutions.com HQ: Chicago, IL, United StatesReported employees: 1-10 | Chicago, IL, United States | 1-10 | Exact match | 7 contacts → |
“Amol Solutions strives to be a leader in cybersecurity services for organizations of all sizes.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Clairosclairos.com HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 6 contacts → |
“Clairos is a cybersecurity company that helps organizations build stronger, more manageable security programs through a practical, tailored approach.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Hellfire Securityhellfiresecurity.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 6 contacts → |
“Not auditors but real hackers.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Network Aegisnetworkaegis.net HQ: Chicago, IL, United StatesReported employees: 1-10 | Chicago, IL, United States | 1-10 | Exact match | 5 contacts → |
“Welcome to Network Aegis!” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Teamwerksteamwerks.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 5 contacts → |
“TeamWerks is an IT company based in the United States.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Cyber Pop-Upcyberpopup.com HQ: Chicago, IL, United StatesReported employees: 1-10 | Chicago, IL, United States | 1-10 | Exact match | 4 contacts → |
“Cybersecurity for small businesses.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Apex IT And Cybersecurity Solutionsapexcybersecurity.org HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 4 contacts → |
“Apex IT and Cybersecurity Solutions Inc is a leading Technology and Cybersecurity services firm based in Chicago, IL.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Cybermetiscybermetis.io HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 4 contacts → |
“CyberMetis has collected some of the industry’s best minds and tools.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Wolf Point Securitywolfpointsecurity.com HQ: Chicago, United StatesReported employees: 1-10 | Chicago, United States | 1-10 | Exact match | 4 contacts → |
“Wolf Point Security is a cyber security consulting firm, plain and simple.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 77 company matches
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Cyber security companies: dataset insights
October 1, 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
77 records in the displayed employee bands.
0 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 United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 77 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: October 1, 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 ↗
Cyber security companies by metro in the United States
- Cyber security companies in New York155
- Cyber security companies in Atlanta94
- Cyber security companies in Washington94
- Cyber security companies in Austin91
- Cyber security companies in Miami82
- Cyber security companies in Houston80
- Cyber security companies in Dallas77
- Cyber security companies in San Francisco75
- Cyber security companies in Tampa66
- Cyber security companies in Arlington51
- Cyber security companies in Columbia48
- Cyber security companies in Las Vegas44
- Cyber security companies in San Diego44
- Cyber security companies in Boston43
- Cyber security companies in Denver43
- Cyber security companies in Los Angeles42
- Cyber security companies in Orlando42
- Cyber security companies in Reston42
- Cyber security companies in Charlotte40
- Cyber security companies in San Antonio40
- Cyber security companies in Baltimore34
- Cyber security companies in Seattle34
- Cyber security companies in Fairfax33
- Cyber security companies in Phoenix33
- Cyber security companies in Huntsville32
- Cyber security companies in Mclean32
- Cyber security companies in Alexandria30
- Cyber security companies in San Jose29
- Cyber security companies in Wilmington29
- Cyber security companies in Plano28
- Cyber security companies in Scottsdale27
- Cyber security companies in Ashburn26
- Cyber security companies in Colorado Springs26
- Cyber security companies in Herndon26
- Cyber security companies in Dover25
Questions about this company list
What does Exact match mean for cyber security companies?
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 cyber security companies did RevenueBase find based in Chicago, United States?
The saved snapshot records 77 matching company records, 3,204 tracked contacts and 1,701 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: October 1, 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
Cyber security companies by geography
- Cyber security companies based in Buenos Aires, Argentina
- Cyber security companies based in Brisbane, Australia
- Cyber security companies based in Canberra, Australia
- Cyber security companies based in Melbourne, Australia
- Cyber security companies based in Sydney, Australia
- Cyber security companies based in Belo Horizonte, Brazil
- Cyber security companies based in Brasilia, Brazil
- Cyber security companies based in Rio De Janeiro, Brazil
- Cyber security companies based in Sao Paulo, Brazil
- Cyber security companies based in Calgary, Canada
- Cyber security companies based in Montreal, Canada
- Cyber security companies based in Ottawa, Canada
Cite this list
RevenueBase Data Team. Top 25 cyber security companies based in Chicago, United States. Snapshot: October 1, 2026. https://revenuebase.ai/companies/cyber-security-companies/united-states/chicago.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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