Company lists · Data verified August 2026

Top 25 Cybersecurity law firms based in the United States

Name: Cybersecurity law 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 2,006 companies tracked

There are 2,006 cybersecurity law firms headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 23,109 professional contacts across them, including 10,367 with verified work emails and 9,660 with mobile numbers. New York is the largest hub.

This list covers cybersecurity law 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.

2,006Companies

23,109Contacts tracked

10,367Verified emails

9,660Mobile numbers

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The 25 largest cybersecurity law firms based in the United States

Ranked by team size

Top 25 of 2,006 cybersecurity law 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	Knobbe Martens	San Francisco, CA	501-1,000	618	370
5	Securityhq	New York, NY	501-1,000	492	279
6	ARETE	New York, NY	201-500	462	301
7	Prescient Security	Nashville, TN	201-500	266	174
8	Baxter Clewis Cybersecurity	Cedar Hill, TX	201-500	251	17
9	Lumifi	Scottsdale, AZ	51-200	247	92
10	Mullen Coughlin LLC	Devon, PA	201-500	213	172
11	Mindpoint Group, A Tyto Athene Company	Reston, VA	1,001-5,000	208	7
12	Tevora	Los Angeles, CA	201-500	196	138
13	Deepseas	n/a	201-500	185	132
14	Cyber Advisors	Maple Grove, MN	201-500	180	112
15	Stratascale	Charlotte, NC	201-500	173	86
16	Harbor IT	New York, NY	201-500	160	36
17	Wilkinson Barker Knauer, LLP	Denver, CO	51-200	137	108
18	Ciso Global	Scottsdale, AZ	201-500	134	85
19	Lightfoot, Franklin & White	Houston, TX	51-200	134	85
20	Helpsystems	Eden Prairie, MN	1,001-5,000	132	27
21	Adapt Forward	North Charleston, SC	51-200	130	36
22	Sealing Technologies, A Parsons Company	Columbia, MD	51-200	119	1
23	Kudu Dynamics LLC	San Antonio, TX	51-200	114	75
24	Directdefense	Denver, CO	51-200	112	87
25	Redgrave LLP	Chantilly, VA	51-200	111	81

Showing 25 of 2,006 cybersecurity law firms based in the United States

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Cybersecurity law firms based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 72 HQs

9,660Contacts with mobile numbers

16Emails re-verified in last 30 days

Companies by employee count

1-10

1,274

11-50

534

51-200

147

201-500

501-1,000

1,001-5,000

Cybersecurity law firms by metro

Metro	Companies
Cybersecurity law firms in New York	72
Cybersecurity law firms in Washington	59
Cybersecurity law firms in Austin	48
Cybersecurity law firms in Atlanta	46
Cybersecurity law firms in Houston	36
Cybersecurity law firms in Miami	35
Cybersecurity law firms in Chicago	32

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 law 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; 16 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 law firms are there based in the United States?

There are 2,006 cybersecurity law 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 cybersecurity law firms?

New York leads with 72 headquartered companies, followed by Washington (59) and Austin (48).

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 10,367 verified decision-maker contacts tracked across these 2,006 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.