Company lists · Data verified August 2026

Top 25 Cybersecurity companies based in Washington, United States

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 168 companies tracked

Our directory lists 168 cybersecurity companies based in Washington, United States, with 2,347 professional contacts and 973 email addresses. The list was last updated in August 2026, and New York is the single most-represented city among the companies listed.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of August 28, 2026.

168Companies

2,347Contacts tracked

973Verified emails

1,030Mobile numbers

Unlock all 168 companies Free account · no credit card · 2 minutes

The 25 largest cybersecurity companies based in Washington, United States

Ranked by team size

Top 25 of 168 cybersecurity companies based in Washington, 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	Babel Street	Washington, DC	201-500	275	163
2	Authentic8	Washington, DC	51-200	124	72
3	Illuminate Technologies	Washington, DC	11-50	111	25
4	Arlo Solutions	Washington, DC	51-200	101	54
5	Adlumin	Washington, DC	51-200	92	51
6	First Health Advisory	Washington, DC	51-200	89	38
7	ACI Federal	Washington, DC	201-500	87	7
8	Redlattice, INC	Washington, DC	501-1,000	74	55
9	Iris Powered By Generali	Washington, DC	51-200	69	43
10	FWG Solutions	Washington, DC	51-200	69	37
11	The Chertoff Group	Washington, DC	11-50	67	50
12	Greynoise Intelligence	Washington, DC	11-50	66	44
13	IMRI	Washington, DC	51-200	56	14
14	Fusion Cyber	Washington, DC	11-50	43	14
15	Tidal Cyber	Washington, DC	11-50	40	24
16	Celerium	Washington, DC	51-200	39	34
17	Star Lab, A Wind River Company	Washington, DC	11-50	35	5
18	Kivu Consulting A Part Of Quorum Cyber	Washington, DC	51-200	34	14
19	Jsoc It, INC	Washington, DC	11-50	30	7
20	hacked.com	Washington, DC	11-50	30	5
21	Personified	Washington, DC	11-50	27	17
22	Rebellion Defense	Washington, DC	51-200	26	13
23	Datapatrol	Washington, DC	11-50	25	16
24	Good Harbor Security Risk Management	Washington, DC	11-50	24	5
25	Biztec	Washington, WV	51-200	23	13

Showing 25 of 168 cybersecurity companies based in Washington, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 973 reachable decision-makers.

Free account · no credit card

See all 168 companies

Cybersecurity companies based in Washington, United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 329 HQs

1,030Contacts with mobile numbers

6Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Cybersecurity companies by metro in the United States

Metro	Companies
Cybersecurity companies in New York	329
Cybersecurity companies in Austin	182
Cybersecurity companies in San Francisco	179
Cybersecurity companies in Washington	168
Cybersecurity companies in Atlanta	158
Cybersecurity companies in Houston	153
Cybersecurity companies in Miami	149

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 companies”, with match quality audited by blind human judging, and headquartered in Washington, 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; 6 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 companies are in the directory?

The directory lists 168 cybersecurity companies based in Washington, United States.

Which city has the most cybersecurity companies?

New York is the single most-represented city among the cybersecurity companies on the list.

How many contacts are available for cybersecurity companies?

The directory includes 2,347 professional contacts and 973 email addresses for the listed cybersecurity companies.

Ready to reach these companies? Verified emails and direct dials for all 168 cybersecurity companies based in Washington, United States. Start with a free account, no credit card.

Get the full list

Related lists

Cybersecurity companies by geography

Browse the directory

Browse: Companies home · Cybersecurity companies in United States · All United States lists · All Cybersecurity companies lists · New lists

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.