Company lists · Data refreshed September 2026
Top 25 Security posture management companies based in Chicago, United States
RevenueBase identified 59 security posture management companies headquartered in Chicago, United States as of September 2026 and tracks 1,921 professional contacts across them, including 1,009 with verified work emails. New York is the largest hub.
This list covers security posture management companies 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 6, 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 security posture management companies based in Chicago, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 628 | ||||
“VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | EntaraPartial evidence | 69 | |||
“Experiencing a security incident?” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 31 | ||||
“In April, 2019 Hillard Heintze joined Jensen Hughes.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 27 | ||||
“In today’s digitally connected world, cyber security plays a crucial role.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 10 | ||||
“Cyber threats are relentless, and security teams are overwhelmed.” Source: company website · checked Sep 6, 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 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 10 | ||||
“Head of Security is a Chicago-based security risk management consulting firm that utilizes behavioral-science and protective-intelligence to help people, organizations, and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 9 | ||||
“Data Defenders is at the forefront of Managed Cybersecurity Operations Providers (MCOP), specializing in safeguarding municipalities through our exclusive Regional Security…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 6, 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 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 6 | ||||
“Not auditors but real hackers.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 5 | ||||
“Welcome to Network Aegis!” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 5 | ||||
“Havoc Shield helps insurance brokers and agencies write more cyber policies through a proactive Risk Assessment Scorecard, aligned to insurance carrier app questions.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 | ||||
“Cybersecurity for small businesses.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | Technoir Security SolutionsIndirect evidence | 4 | |||
“There's nothing like the peace of mind that comes from knowing someone has your back.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 | ||||
“CyberMetis has collected some of the industry’s best minds and tools.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 | ||||
“Wolf Point Security is a cyber security consulting firm, plain and simple.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | RED Door TechnologiesIndirect evidence | 3 | |||
“Red Door Technologies has protected Chicago small businesses since 2009.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | ProtecteditStrong evidence | 2 | |||
“Founded 2019 in Chicago by a team with industry expertise, ProtectedIT is a Managed Security Services Provider delivering remote infrastructure management, cloud adoption…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 | ||||
“B Suite Cyber Security is a leader in minimizing cyber breach risk and demonstrating compliance for the financial industry.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 59 security posture management companies based in Chicago, United States
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Security posture management companies based in Chicago, United States at a glance
As of Sep 6, 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 59 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 security posture management companies, 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 “security posture management companies”. 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 security posture management companies, 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, 1,009 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 6, 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.
Security posture management companies by metro in the United States
- Security posture management companies in New York118
- Security posture management companies in Atlanta79
- Security posture management companies in Austin79
- Security posture management companies in Houston72
- Security posture management companies in Dallas71
- Security posture management companies in San Francisco63
- Security posture management companies in Chicago59
- Security posture management companies in Miami59
- Security posture management companies in Washington58
- Security posture management companies in Los Angeles51
- Security posture management companies in Tampa50
- Security posture management companies in Charlotte41
- Security posture management companies in Arlington39
- Security posture management companies in Phoenix38
- Security posture management companies in San Diego37
- Security posture management companies in Las Vegas35
- Security posture management companies in Boston32
- Security posture management companies in Denver32
- Security posture management companies in Orlando32
- Security posture management companies in Columbia30
- Security posture management companies in Seattle30
- Security posture management companies in Baltimore26
- Security posture management companies in Wilmington26
Frequently asked
How many security posture management companies are there based in Chicago, United States?
RevenueBase identified 59 security posture management companies 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?
Trustwave, A Levelblue Company, headquartered in Chicago, tops this list with the largest team on record.
Which city has the most security posture management companies?
New York leads with 118 headquartered companies, followed by Atlanta (79) and Austin (79).
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 1,009 verified decision-maker contacts tracked across these 59 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 6, 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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