Company lists · Data refreshed September 2026
Top 25 Network security consulting firms based in Chicago, United States
RevenueBase identified 79 network security consulting firms headquartered in Chicago, United States as of September 2026 and tracks 2,165 professional contacts across them, including 1,165 with verified work emails. New York is the largest hub.
This list covers network security consulting firms headquartered in Chicago, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 network security consulting firms based in Chicago, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 947 | ||||
“Coalfire is the premier Cybersecurity and Compliance Services leader for the tech, healthcare, and finance industries.(This page is maintained by Marketing.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 874 | ||||
“Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | SecurionPartial evidence | 29 | |||
“SECURION was formed by industry problem-solving veterans that came together to bring their vision of a completely security focused, vendor agnostic, secure by design approach.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 27 | ||||
“In today’s digitally connected world, cyber security plays a crucial role.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | Ravenswood Technology GroupIndirect evidence | 21 | |||
“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.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 10 | ||||
“Cyber threats are relentless, and security teams are overwhelmed.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 10 | ||||
“ArxNimbus brings visibility to every organization’s cybersecurity program, radically advancing how businesses understand and optimize for real resilience.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 9 | ||||
“HTA Technology Security Consulting (HTA) is a certified Woman-Owned, Small, Disadvantaged, Minority business with offices in Chicago, IL, and the Washington DC corridor.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 8 | ||||
“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.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 7 | ||||
“At Cyber Bark, we bring 100 years of collective experience to the table, serving businesses across the US from our base in Illinois.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 7 | ||||
“JMA Consulting, LLC brings secure IT solutions to commercial clients in multiple industries nationwide.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 7 | ||||
“Amol Solutions strives to be a leader in cybersecurity services for organizations of all sizes.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 6 | ||||
“CrossRealms is a premier Cybersecurity and Managed Services provider with multiple locations in the United States, Canada, Europe, MENA region, and Asia.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 6 | ||||
“Clairos is a cybersecurity company that helps organizations build stronger, more manageable security programs through a practical, tailored approach.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 6 | ||||
“Not auditors but real hackers.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 5 | ||||
“Welcome to Network Aegis!” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 5 | ||||
“We operationalize, economize, and secure enterprise organizations by understanding their business outcomes and connecting them with proven, venture-backed startups recommended by…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 | ||||
“ClearLP is a woman owned business specializing in digital security and network technology.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 | ||||
“Cybersecurity for small businesses.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | Urbane SecurityPartial evidence | 4 | |||
“Urbane Security is an information security firm that provides specially tailored security and compliance solutions that empower the Fortune 500 to securely focus on their ultimate…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 | ||||
“Apex IT and Cybersecurity Solutions Inc is a leading Technology and Cybersecurity services firm based in Chicago, IL.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 | ||||
“CyberMetis has collected some of the industry’s best minds and tools.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 4 | ||||
“Wolf Point Security is a cyber security consulting firm, plain and simple.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | Quantum VigilancePartial evidence | 3 | |||
“Quantum's Virtual Chief Information Security Officer (QvCISO) Services can help guide your company towards effective cybersecurity and compliance.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 | ||||
“Gratitech works with large and mid-sized B2B and B2C organizations making technology and software more secure through NextGen full-stack cybersecurity.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 79 network security consulting firms based in Chicago, United States
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Network security consulting firms based in Chicago, United States at a glance
As of Sep 5, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 79 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among network security consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- 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
- Companies headquartered in Chicago, United States whose own description of what they do matches “network security consulting firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among network security consulting firms, and records with no verified work email. Companies headquartered outside Chicago are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 1,165 across the full list. 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 5, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Network security consulting firms by metro in the United States
- Network security consulting firms in New York134
- Network security consulting firms in Houston102
- Network security consulting firms in Washington98
- Network security consulting firms in Atlanta97
- Network security consulting firms in Austin90
- Network security consulting firms in Dallas85
- Network security consulting firms in Chicago79
- Network security consulting firms in Miami77
- Network security consulting firms in San Francisco64
- Network security consulting firms in Tampa63
- Network security consulting firms in Los Angeles56
- Network security consulting firms in Denver53
- Network security consulting firms in San Diego51
- Network security consulting firms in Charlotte50
- Network security consulting firms in Arlington49
- Network security consulting firms in Columbia46
- Network security consulting firms in Boston44
- Network security consulting firms in San Antonio41
- Network security consulting firms in Phoenix40
- Network security consulting firms in Seattle39
- Network security consulting firms in Las Vegas38
- Network security consulting firms in Orlando38
- Network security consulting firms in Alexandria35
- Network security consulting firms in Reston32
- Network security consulting firms in Baltimore31
- Network security consulting firms in Mclean31
- Network security consulting firms in Minneapolis31
- Network security consulting firms in Raleigh31
- Network security consulting firms in Fairfax28
- Network security consulting firms in Huntsville27
- Network security consulting firms in San Jose27
- Network security consulting firms in Sheridan27
- Network security consulting firms in Ashburn26
- Network security consulting firms in Columbus26
- Network security consulting firms in Scottsdale26
- Network security consulting firms in Wilmington25
Frequently asked
How many network security consulting firms are there based in Chicago, United States?
RevenueBase identified 79 network security consulting firms headquartered in Chicago, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Coalfire, headquartered in Chicago, tops this list with the largest team on record.
Which city has the most network security consulting firms?
New York leads with 134 headquartered companies, followed by Houston (102) and Washington (98).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,165 verified decision-maker contacts tracked across these 79 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 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.
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