Company lists · Data refreshed September 2026
Top 24 Network security consulting companies based in Chicago, United States
RevenueBase identified 49 network security consulting companies headquartered in Chicago, United States as of September 2026 and tracks 1,112 professional contacts across them, including 536 with verified work emails. New York is the largest hub.
This list covers network 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 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 24 largest network security consulting 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 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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. | |||||
| 3 | 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. | |||||
| 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 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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. | |||||
| 6 | 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. | |||||
| 7 | 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. | |||||
| 8 | 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. | |||||
| 9 | 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. | |||||
| 10 | 6 | ||||
“Not auditors but real hackers.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 5 | ||||
“Welcome to Network Aegis!” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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. | |||||
| 13 | 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. | |||||
| 14 | 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. | |||||
| 15 | 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. | |||||
| 16 | 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. | |||||
| 17 | 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. | |||||
| 18 | Southside CHI SolutionsStrong evidence | 2 | |||
“Southside CHI Solutions is Chicago's premier provider of comprehensive IT and network security solutions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1 | ||||
“Cyfenders is a cybersecurity advisory firm based in Chicago.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | Packetwise INCStrong evidence | 1 | |||
“PacketWise is a leading network consulting company that specializes in providing comprehensive solutions for businesses of all sizes.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 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 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 | ||||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | Wallscott SolutionsStrong evidence | 1 | |||
“WallScott Solutions is the Ultimate Provider for Network and Data Security in Compliance Regulated industries for Consumer Protection.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 24 of 49 network security consulting companies based in Chicago, United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 536 reachable decision-makers.
Free signup · no credit card
Network security consulting companies 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 49 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 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 “network 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 network 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, 536 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 companies by metro in the United States
- Network security consulting companies in New York78
- Network security consulting companies in Atlanta65
- Network security consulting companies in Houston60
- Network security consulting companies in Dallas58
- Network security consulting companies in Austin52
- Network security consulting companies in Miami51
- Network security consulting companies in Chicago49
- Network security consulting companies in Washington48
- Network security consulting companies in San Francisco44
- Network security consulting companies in Tampa38
- Network security consulting companies in Los Angeles36
- Network security consulting companies in Charlotte33
- Network security consulting companies in Denver32
- Network security consulting companies in San Antonio32
- Network security consulting companies in San Diego32
- Network security consulting companies in Arlington30
- Network security consulting companies in Phoenix30
- Network security consulting companies in Columbia26
- Network security consulting companies in Seattle25
Frequently asked
How many network security consulting companies are there based in Chicago, United States?
RevenueBase identified 49 network 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?
Trustwave, A Levelblue Company, headquartered in Chicago, tops this list with the largest team on record.
Which city has the most network security consulting companies?
New York leads with 78 headquartered companies, followed by Atlanta (65) and Houston (60).
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 536 verified decision-maker contacts tracked across these 49 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.
Ready to reach these companies? Verified emails and direct dials for all 49 network security consulting companies based in Chicago, United States. Start with a free account, no credit card.
Get the full listRelated lists
Network security consulting companies by geography
- Network security consulting companies based in the United States
- Network security consulting companies based in the United Kingdom
- Network security consulting companies based in France
- Network security consulting companies based in Brazil
- Network security consulting companies based in Canada
- Network security consulting companies based in Germany
- Network security consulting companies based in Australia
- Network security consulting companies based in the Netherlands
- Network security consulting companies based in Italy
- Network security consulting companies based in Spain
- Network security consulting companies based in Mexico
- Network security consulting companies based in Belgium
Browse the directory
Browse: Companies home · Network security consulting companies in United States · All United States lists · All Network security consulting companies lists · New lists
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
- Network security consulting companies based in the United States
- Network security consulting companies based in the United Kingdom
- Network security consulting companies based in France
- Network security consulting companies based in Brazil
- Network security consulting companies based in Canada
- Network security consulting companies based in Germany