Company lists · Data refreshed September 2026
Top 25 Security consulting companies based in Chicago, United States
RevenueBase identified 68 security consulting companies headquartered in Chicago, United States as of September 2026 and tracks 1,964 professional contacts across them, including 334 with verified work emails. New York is the largest hub.
This list covers security consulting 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 consulting companies based in Chicago, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,138 | ||||
“At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 61 | ||||
“Jensen Hughes was launched in 2014 through the historic merger of Hughes Associates and Rolf Jensen & Associates (RJA), two of the most experienced and respected fire protection…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 27 | ||||
“Trusted protection and investigative services with a commitment to excellence.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 18 | ||||
“SecureTrust™, a Sysnet company, leads the industry in innovation and processes for achieving and maintaining compliance and security.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 18 | ||||
“Halo Security Group is a Chicago-based professional security services company providing comprehensive and reliable protection for businesses, residential communities, and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 12 | ||||
“Inner Valor is a premier provider of White Glove Security℠ and corporate investigation services, offering elite and personalized solutions to protect your assets, people, and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | Skynet Security SystemsPartial evidence | 11 | |||
“SkyNet Security Systems was founded by a group of highly experienced and innovative security professionals who care about their clients.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Mccarthy ByrnesStrong evidence | 10 | |||
“Security Consulting | Private Investigations | Law Enforcement Consulting | McCarthy Byrnes is a trusted security, investigations, and public safety advisory firm providing…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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. | |||||
| 11 | 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. | |||||
| 12 | 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. | |||||
| 13 | 7 | ||||
“JMA Consulting, LLC brings secure IT solutions to commercial clients in multiple industries nationwide.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 6 | ||||
“RedHawk is a Investigations and Security Risk Management firm specializing in comprehensive, professional and discreet services to a wide variety of US based and international…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 6 | ||||
“Not auditors but real hackers.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | TueorisIndirect evidence | 5 | |||
“At Tueoris, our singular mission is to make our clients successful at managing their information risks and compliance needs smartly and effectively.” Source: company website · checked Sep 6, 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 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | TeamwerksIndirect evidence | 5 | |||
“TeamWerks is an IT company based in the United States.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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. | |||||
| 20 | 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. | |||||
| 21 | 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. | |||||
| 22 | 1 | ||||
“The mission of Erus Consulting is to consistently deliver excellence in information security consulting and advisory services, endeavoring to be your preferred partner for all…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 | ||||
“Cyfenders is a cybersecurity advisory firm based in Chicago.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 | ||||
“iTeknologia is a full-service information technology (IT) consulting firm that provides services to the small and medium sized business market in the Chicago metropolitan area and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 | ||||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 68 security consulting companies based in Chicago, United States
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Security consulting 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 68 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 consulting 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 consulting 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 consulting 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, 334 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 consulting companies by metro in the United States
- Security consulting companies in New York131
- Security consulting companies in Houston93
- Security consulting companies in Atlanta89
- Security consulting companies in Washington88
- Security consulting companies in Austin70
- Security consulting companies in Chicago68
- Security consulting companies in Los Angeles68
- Security consulting companies in Dallas67
- Security consulting companies in Miami65
- Security consulting companies in San Francisco54
- Security consulting companies in Tampa53
- Security consulting companies in Denver43
- Security consulting companies in Arlington41
- Security consulting companies in Charlotte40
- Security consulting companies in Seattle38
- Security consulting companies in San Diego36
- Security consulting companies in Alexandria35
- Security consulting companies in Boston34
- Security consulting companies in San Antonio34
- Security consulting companies in Phoenix33
- Security consulting companies in Minneapolis30
- Security consulting companies in Raleigh29
- Security consulting companies in Orlando28
- Security consulting companies in Las Vegas27
- Security consulting companies in Reston27
- Security consulting companies in Columbia26
Frequently asked
How many security consulting companies are there based in Chicago, United States?
RevenueBase identified 68 security consulting 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?
Titan Security Group, headquartered in Chicago, tops this list with the largest team on record.
Which city has the most security consulting companies?
New York leads with 131 headquartered companies, followed by Houston (93) and Atlanta (89).
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 334 verified decision-maker contacts tracked across these 68 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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