Company lists · Data verified August 2026

Top 25 Cybersecurity skills testing platforms based in the United States

Name: Cybersecurity skills testing platforms 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 828 companies tracked

There are 828 cybersecurity skills testing platforms headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 13,848 professional contacts across them, including 4,111 with verified work emails and 3,356 with mobile numbers. New York is the largest hub.

This list covers cybersecurity skills testing platforms 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.

828Companies

13,848Contacts tracked

4,111Verified emails

3,356Mobile numbers

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The 25 largest cybersecurity skills testing platforms based in the United States

Ranked by team size

Top 25 of 828 cybersecurity skills testing platforms 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	Sans Institute	Rockville, MD	n/a	1,877	521
2	Ec-Council	Albuquerque, NM	1,001-5,000	1,269	330
3	Offsec	New York, NY	201-500	878	43
4	Pentera	Burlington, MA	201-500	484	355
5	horizon3.ai	Durham, NC	201-500	356	246
6	Cobalt	San Francisco, CA	201-500	345	122
7	Synack	Redwood City, CA	201-500	246	92
8	Metacompliance	Atlanta, GA	201-500	237	159
9	Giac Certifications	Bethesda, MD	201-500	184	16
10	Black Hills Information Security	Spearfish, SD	51-200	130	81
11	Cybrary	Riverdale, MD	51-200	127	14
12	XBOW	Seattle, WA	201-500	122	58
13	Surpass Assessment	West Chester, PA	51-200	115	85
14	Directdefense	Denver, CO	51-200	112	87
15	Ioactive, INC	Atlanta, GA	51-200	105	76
16	Ninjio Cybersecurity Awareness Training	Westlake Village, CA	51-200	102	63
17	Plextrac	Boise, ID	51-200	92	66
18	Whitehat Dynamic By Synopsys	San Jose, CA	201-500	89	15
19	Strike	New York	51-200	84	31
20	Thrivedx	Miami, FL	1,001-5,000	78	4
21	Ondefend	Jacksonville, FL	51-200	72	40
22	WIZER	Boston, MA	51-200	67	41
23	Apollo Information Systems	Dallas, TX	51-200	63	40
24	Evolve Security	Chicago, IL	51-200	57	26
25	Breakpoint Labs	Falls Church, VA	51-200	55	33

Showing 25 of 828 cybersecurity skills testing platforms based in the United States

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Cybersecurity skills testing platforms based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 40 HQs

3,356Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

462

11-50

285

51-200

201-500

1,001-5,000

10001+

Cybersecurity skills testing platforms by metro

Metro	Companies
Cybersecurity skills testing platforms in New York	40
Cybersecurity skills testing platforms in San Francisco	26
Cybersecurity skills testing platforms in Austin	23
Cybersecurity skills testing platforms in Dallas	18
Cybersecurity skills testing platforms in San Antonio	16
Cybersecurity skills testing platforms in Atlanta	16
Cybersecurity skills testing platforms in Chicago	15

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 skills testing platforms”, 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; 5 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 skills testing platforms are there based in the United States?

There are 828 cybersecurity skills testing platforms headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Sans Institute, headquartered in Rockville, tops this list with the largest team on record.

Which city has the most cybersecurity skills testing platforms?

New York leads with 40 headquartered companies, followed by San Francisco (26) and Austin (23).

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 4,111 verified decision-maker contacts tracked across these 828 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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Cybersecurity skills testing platforms by geography

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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.