Company lists · Data verified August 2026

Top 25 Application security consulting firms based in the United States

Name: Application security consulting firms 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 1,826 companies tracked

There are 1,826 application security consulting firms headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 18,656 professional contacts across them, including 7,313 with verified work emails and 6,517 with mobile numbers. New York is the largest hub.

This list covers application security consulting firms 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.

1,826Companies

18,656Contacts tracked

7,313Verified emails

6,517Mobile numbers

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The 25 largest application security consulting firms based in the United States

Ranked by team size

Top 25 of 1,826 application security consulting firms 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	Guidepoint Security	Tampa, FL	1,001-5,000	1,234	809
2	Checkmarx	Paramus, NJ	501-1,000	1,033	708
3	Veracode	Burlington, MA	501-1,000	547	399
4	Xcelerate Solutions	Mclean, VA	1,001-5,000	445	8
5	Cobalt	San Francisco, CA	201-500	345	122
6	Bishop FOX	Tempe, AZ	201-500	340	194
7	Upguard	Mountain View, CA	201-500	338	220
8	Security Risk Advisors	Philadelphia, PA	201-500	311	216
9	Baxter Clewis Cybersecurity	Cedar Hill, TX	201-500	251	17
10	Securin INC	Albuquerque, NM	201-500	250	89
11	Synack	Redwood City, CA	201-500	246	92
12	Noname Security	San Jose, CA	201-500	230	55
13	Mindpoint Group, A Tyto Athene Company	Reston, VA	1,001-5,000	208	7
14	TAC Security	San Francisco, CA	51-200	207	46
15	Cyber Advisors	Maple Grove, MN	201-500	180	112
16	Guardsquare	Boston, MA	51-200	165	103
17	Aikido Security	Chicago, IL	201-500	149	92
18	Directdefense	Denver, CO	51-200	112	87
19	SBS Cybersecurity	Madison, SD	51-200	106	64
20	WATI	Sacramento, CA	201-500	106	13
21	Dignari	Alexandria, VA	201-500	103	2
22	Trustedsec	Fairlawn, OH	51-200	100	72
23	Fishnet Security	Roswell, GA	501-1,000	97	14
24	Whitehat Dynamic By Synopsys	San Jose, CA	201-500	89	15
25	Crossbow Cybersecurity	Walnut, CA	51-200	83	3

Showing 25 of 1,826 application security consulting firms based in the United States

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Application security consulting firms based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 54 HQs

6,517Contacts with mobile numbers

34Emails re-verified in last 30 days

Companies by employee count

1-10

1,130

11-50

521

51-200

120

201-500

501-1,000

1,001-5,000

5,001-10,000

Application security consulting firms by metro

Metro	Companies
Application security consulting firms in New York	54
Application security consulting firms in Austin	43
Application security consulting firms in San Francisco	41
Application security consulting firms in Atlanta	35
Application security consulting firms in Miami	31
Application security consulting firms in Houston	30
Application security consulting firms in Seattle	25

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 “application security consulting firms”, 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; 34 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 application security consulting firms are there based in the United States?

There are 1,826 application security consulting firms headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Guidepoint Security, headquartered in Tampa, tops this list with the largest team on record.

Which city has the most application security consulting firms?

New York leads with 54 headquartered companies, followed by Austin (43) and San Francisco (41).

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 7,313 verified decision-maker contacts tracked across these 1,826 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.