Company lists · Data refreshed September 2026

Top 25 Cyber consulting firms based in Chicago, United States

Name: Cyber consulting firms based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 182 companies tracked

RevenueBase identified 182 company matches for cyber consulting firms associated with Chicago, United States as of September 2026 and tracks 3,853 professional contacts across them, including 1,838 with verified work emails. Across the United States, New York is the largest hub for this category (379 companies); Chicago has 182.

This list covers company matches for cyber consulting firms 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 September 21, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built

182Companies

3,853Contacts tracked

1,838Verified emails

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The 25 largest cyber consulting firms based in Chicago, United States

Ranked by team size

Top 25 of 182 company matches for cyber consulting firms based in Chicago, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Coalfire	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	1,001-5,000	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 · Sep 21, 2026 · View company records in RevenueBase
2	Trustwave, A Levelblue Company	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	501-1,000	874 contacts →
	Exact match “Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Vikingcloud	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	1,001-5,000	628 contacts →
	Exact match “VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Empist	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	51-200	89 contacts →
	Exact match “At EMPIST, our mission is to fuel businesses with the technology they need to succeed.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Crossrealms International	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	51-200	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 · Sep 21, 2026 · View company records in RevenueBase
6	DTI Diversified Technology INC	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	51-200	62 contacts →
	Exact match “DTI is a 100% African American-owned IT consulting and network services firm with nearly 40 years of experience.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Evolve Security	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	51-200	59 contacts →
	Exact match “Evolve Security is an offensive cybersecurity solution, delivering continuous penetration testing with the optimal blend of AI automation and human expertise, providing peace of…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	MIS Computer MSP	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	11-50	40 contacts →
	Exact match “MIS Computer: More Than An MSP.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	US Software Professionals INC	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	11-50	36 contacts →
	Exact match “USSP (US Software Professionals Inc) is a best in class IT consulting firm offering end to end service and implementation solutions to clients worldwide.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Securion	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	51-200	29 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Abira Security	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	51-200	27 contacts →
	Exact match “In today’s digitally connected world, cyber security plays a crucial role.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	TOP Talent	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	11-50	26 contacts →
	Exact match “Top Talent Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Vbridge Global LLC	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	11-50	23 contacts →
	Exact match “VBridgeGlobal LLC is a niche IT Services and Consulting organization in Illinois.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Pearl Consulting Group	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	11-50	22 contacts →
	Exact match “Pearl Consulting Group is a global IT consulting firm dedicated to helping businesses navigate the complexities of technology with confidence.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Ravenswood Technology Group	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	11-50	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 · Sep 21, 2026 · View company records in RevenueBase
16	Securetrust	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	201-500	18 contacts →
	Exact match “SecureTrust™, a Sysnet company, leads the industry in innovation and processes for achieving and maintaining compliance and security.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Friendly Solutions Corp	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	11-50	17 contacts →
	Exact match “We are an information technology consulting firm, dedicated to providing comprehensive technology solutions for specific business needs.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Scalesology	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	11-50	16 contacts →
	Exact match “Scalesology is a data analytics, software development, and cybersecurity consulting company.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Nectel Technologies, INC	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	n/a	14 contacts →
	Exact match “One of the top IT companies in Chicago.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Elliottsweb	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	11-50	12 contacts →
	Exact match “Elliottsweb is a professional internet consulting company focusing on internet marketing, search engine optimization (SEO), social media, ecommerce development, and website…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Impelix	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	11-50	10 contacts →
	Exact match “Cyber threats are relentless, and security teams are overwhelmed.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Mccarthy Byrnes	Exact match	Chicago, United StatesHQ recorded Sep 21, 2026	11-50	10 contacts →
	Exact match “Security Consulting \| Private Investigations \| Law Enforcement Consulting \| McCarthy Byrnes is a trusted security, investigations, and public safety advisory firm providing…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Arxnimbus	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	11-50	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 · Sep 21, 2026 · View company records in RevenueBase
24	Agrada	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	1-10	9 contacts →
	Exact match “Agrada Group provides clear and sustainable solutions to secure and grow your company.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Harrington Technology & Associates, INC	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	11-50	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 · Sep 21, 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 consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 182 cyber consulting firms based in Chicago, United States

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Cyber consulting firms based in Chicago, United States at a glance

As of Sep 21, 2026

47.7%Verified-email coverage

21.2Average contacts per company

1-10Median size (employees)

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

106

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 182 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 consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. 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 1,838 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 21, 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 consulting firms by metro in the United States

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

How many cyber consulting firms are there based in Chicago, United States?

RevenueBase identified 182 company matches for cyber consulting firms associated with Chicago, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

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 consulting firms?

New York leads the United States with 379 company records, followed by Washington (228) and Atlanta (227). Chicago has 182.

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 1,838 professional contacts with verified work emails tracked across these 182 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 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.