Company lists · Data verified August 2026

Top 25 Cybersecurity audit companies based in the United States

Name: Cybersecurity audit companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 3,001 companies tracked

There are 3,001 cybersecurity audit companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 38,403 professional contacts across them, including 13,355 with verified work emails and 12,697 with mobile numbers. New York is the largest hub.

This list covers cybersecurity audit companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

3,001Companies

38,403Contacts tracked

13,355Verified emails

12,697Mobile numbers

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The 25 largest cybersecurity audit companies based in the United States

Ranked by team size

Top 25 of 3,001 cybersecurity audit companies based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Bugcrowd	San Francisco, CA	n/a	3,566	238
2	OPTIV	Chantilly, VA	1,001-5,000	2,206	1,422
3	Thales Cybersecurity Products	Austin, TX	1,001-5,000	1,252	645
4	Guidepoint Security	Tampa, FL	1,001-5,000	1,234	809
5	Coalfire	Chicago, IL	1,001-5,000	960	613
6	Fireeye, INC	Milpitas, CA	1,001-5,000	679	51
7	Telos Corporation	Las Vegas, NV	501-1,000	636	230
8	Vikingcloud	Chicago, IL	1,001-5,000	618	436
9	Securityscorecard	New York, NY	501-1,000	529	5
10	Security Risk Advisors	Philadelphia, PA	201-500	311	216
11	Prescient Security	Nashville, TN	201-500	266	174
12	Baxter Clewis Cybersecurity	Cedar Hill, TX	201-500	251	17
13	Thoropass	New York, NY	201-500	240	139
14	Netdata Cybersecurity	Miami, FL	201-500	209	78
15	Mindpoint Group, A Tyto Athene Company	Reston, VA	1,001-5,000	208	7
16	Tevora	Los Angeles, CA	201-500	196	138
17	Deepseas	n/a	201-500	185	132
18	Cyber Advisors	Maple Grove, MN	201-500	180	112
19	Hitachi Cyber	Santa Clara, CA	501-1,000	161	58
20	Ciso Global	Scottsdale, AZ	201-500	134	85
21	Helpsystems	Eden Prairie, MN	1,001-5,000	132	27
22	WATI	Sacramento, CA	201-500	106	13
23	Focal Point Data Risk A CDW Company	Tampa, FL	201-500	68	39
24	Sourcefire, Part Of Cisco	Columbia, MD	501-1,000	63	6
25	Solutionary	Pittsburgh, PA	201-500	38	7

Showing 25 of 3,001 cybersecurity audit companies based in the United States

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Cybersecurity audit companies based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 83 HQs

12,697Contacts with mobile numbers

21Emails re-verified in last 30 days

Companies by employee count

1-10

1,822

11-50

867

51-200

233

201-500

501-1,000

1,001-5,000

5,001-10,000

Cybersecurity audit companies by metro

Metro	Companies
Cybersecurity audit companies in New York	83
Cybersecurity audit companies in Atlanta	62
Cybersecurity audit companies in Houston	58
Cybersecurity audit companies in Washington	57
Cybersecurity audit companies in Chicago	55
Cybersecurity audit companies in Miami	55
Cybersecurity audit companies in Tampa	54

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “cybersecurity audit companies”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 21 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many cybersecurity audit companies are there based in the United States?

There are 3,001 cybersecurity audit companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Bugcrowd, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most cybersecurity audit companies?

New York leads with 83 headquartered companies, followed by Atlanta (62) and Houston (58).

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 13,355 verified decision-maker contacts tracked across these 3,001 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.