Company lists · Data verified August 2026

Top 25 AI cybersecurity companies based in San Francisco, United States

Name: AI cybersecurity companies based in San Francisco, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 79 companies tracked

There are 79 AI cybersecurity companies headquartered in San Francisco, United States (RevenueBase, August 2026). RevenueBase tracks 6,425 professional contacts across them, including 1,722 with verified work emails and 1,118 with mobile numbers. New York is the largest hub.

This list covers AI cybersecurity companies headquartered in San Francisco, 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.

79Companies

6,425Contacts tracked

1,722Verified emails

1,118Mobile numbers

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The 25 largest AI cybersecurity companies based in San Francisco, United States

Ranked by team size

Top 25 of 79 AI cybersecurity companies based in San Francisco, 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	Bugcrowd	San Francisco, CA	n/a	3,566	238
2	CYERA	San Francisco, CA	1,001-5,000	1,121	642
3	Sysdig	San Francisco, CA	501-1,000	653	407
4	Vehere	San Francisco, CA	201-500	210	138
5	Cobalt AI	San Francisco, CA	51-200	129	39
6	Panther	San Francisco, CA	51-200	128	62
7	Harmonic Security	San Francisco, CA	51-200	54	35
8	Escape	San Francisco, CA	11-50	43	23
9	akto.io	San Francisco, CA	11-50	32	16
10	Symmetry Systems	San Francisco, CA	11-50	27	17
11	Strongestlayer	San Francisco, CA	51-200	27	2
12	Seworks	San Francisco, CA	11-50	26	1
13	Virtue AI	San Francisco, CA	11-50	25	9
14	Actifile	San Francisco, CA	11-50	24	10
15	Nullify	San Francisco	51-200	19	3
16	Operant AI	San Francisco, CA	11-50	16	10
17	Epiccyber	San Francisco, CA	11-50	14	9
18	ZAUN	San Francisco, CA	11-50	10	6
19	Metabase Q	San Francisco	51-200	9	5
20	Nfactor Technologies INC	San Francisco, CA	11-50	7	5
21	Petra Security	San Francisco, CA	11-50	6	4
22	Specular	San Francisco	1-10	6	4
23	Xcape, INC	San Francisco, CA	11-50	6	3
24	Rapticore	San Francisco, CA	11-50	5	2
25	Secure Overcast	San Francisco, CA	1-10	4	3

Showing 25 of 79 AI cybersecurity companies based in San Francisco, United States

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AI cybersecurity companies based in San Francisco, United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 101 HQs

1,118Contacts with mobile numbers

15Emails 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

AI cybersecurity companies by metro in the United States

Metro	Companies
AI cybersecurity companies in New York	101
AI cybersecurity companies in San Francisco	79
AI cybersecurity companies in Austin	54
AI cybersecurity companies in Miami	44
AI cybersecurity companies in Boston	38
AI cybersecurity companies in Dallas	36
AI cybersecurity companies in Washington	33

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 “AI cybersecurity companies”, with match quality audited by blind human judging, and headquartered in San Francisco, 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; 15 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 AI cybersecurity companies are there based in San Francisco, United States?

There are 79 AI cybersecurity companies headquartered in San Francisco, United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Bugcrowd, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most AI cybersecurity companies?

New York leads with 101 headquartered companies, followed by San Francisco (79) and Austin (54).

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 1,722 verified decision-maker contacts tracked across these 79 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.