Company lists · Data verified August 2026

Top 25 Data security consulting firms based in the United States

Name: Data 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 5,467 companies tracked

There are 5,467 data security consulting firms headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 54,609 professional contacts across them, including 20,346 with verified work emails and 20,777 with mobile numbers. New York is the largest hub.

This list covers data 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.

5,467Companies

54,609Contacts tracked

20,346Verified emails

20,777Mobile numbers

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

Ranked by team size

Top 25 of 5,467 data 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	OPTIV	Chantilly, VA	1,001-5,000	2,206	1,422
2	Guidepoint Security	Tampa, FL	1,001-5,000	1,234	809
3	Coalfire	Chicago, IL	1,001-5,000	960	613
4	Vikingcloud	Chicago, IL	1,001-5,000	618	436
5	Solomonedwards	Wayne, PA	1,001-5,000	566	179
6	Securityhq	New York, NY	501-1,000	492	279
7	Xcelerate Solutions	Mclean, VA	1,001-5,000	445	8
8	Kudelski Security	Irving, TX	201-500	404	201
9	Protegrity	Stamford, CT	201-500	353	186
10	Intelligent Technical Solutions	Olympia, WA	201-500	313	194
11	K2 Integrity	Washington, DC	201-500	313	161
12	Security Risk Advisors	Philadelphia, PA	201-500	311	216
13	Brickred Systems	Redmond, WA	501-1,000	269	55
14	Securitymetrics	Orem, UT	501-1,000	267	133
15	Prescient Security	Nashville, TN	201-500	266	174
16	Guidepost Solutions	Phoenix, AZ	201-500	263	201
17	Baxter Clewis Cybersecurity	Cedar Hill, TX	201-500	251	17
18	Falconwood, Incorporated	North Charleston, SC	201-500	239	129
19	Burwood Group	Lombard, IL	201-500	223	163
20	Mindpoint Group, A Tyto Athene Company	Reston, VA	1,001-5,000	208	7
21	Tevora	Los Angeles, CA	201-500	196	138
22	Deepseas	n/a	201-500	185	132
23	Cyber Advisors	Maple Grove, MN	201-500	180	112
24	Ntirety	Austin, TX	1,001-5,000	166	134
25	Aegis Security & Investigations INC	San Francisco	201-500	164	5

Showing 25 of 5,467 data security consulting firms based in the United States

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

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 165 HQs

20,777Contacts with mobile numbers

36Emails re-verified in last 30 days

Companies by employee count

1-10

3,401

11-50

1,508

51-200

415

201-500

501-1,000

1,001-5,000

5,001-10,000

Data security consulting firms by metro

Metro	Companies
Data security consulting firms in New York	165
Data security consulting firms in Atlanta	112
Data security consulting firms in Washington	111
Data security consulting firms in Houston	106
Data security consulting firms in San Francisco	81
Data security consulting firms in Miami	80
Data security consulting firms in Austin	79

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 “data 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; 36 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 data security consulting firms are there based in the United States?

There are 5,467 data security consulting firms headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

OPTIV, headquartered in Chantilly, tops this list with the largest team on record.

Which city has the most data security consulting firms?

New York leads with 165 headquartered companies, followed by Atlanta (112) and Washington (111).

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 20,346 verified decision-maker contacts tracked across these 5,467 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.