Company lists · Data refreshed September 2026

Top 25 Cybersecurity services and solutions based in San Francisco, United States

Name: Cybersecurity services and solutions based in San Francisco, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 173 companies tracked

RevenueBase identified 173 company matches for cybersecurity services and solutions associated with San Francisco, United States as of September 2026 and tracks 13,713 professional contacts across them, including 2,824 with verified work emails. Across the United States, New York is the largest hub for this category (457 companies); San Francisco has 173.

This list covers company matches for cybersecurity services and solutions associated with San Francisco, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 24, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 24, 2026 How this list was built

173Companies

13,713Contacts tracked

2,824Verified emails

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The 25 largest cybersecurity services and solutions based in San Francisco, United States

Ranked by team size

Top 25 of 173 company matches for cybersecurity services and solutions based in San Francisco, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 24, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Hackerone	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	n/a	6,058 contacts →
	Exact match “HackerOne is a global leader in Continuous Threat Exposure Management (CTEM) and the only solution provider that pairs the simultaneous trust of the Fortune 500 and the world's…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
2	Bugcrowd	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	n/a	3,649 contacts →
	Exact match “We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
3	Coalition, INC	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	501-1,000	724 contacts →
	Exact match “Coalition is the world's first Active Insurance provider designed to help prevent digital risk before it strikes.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
4	Nozomi Networks	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	201-500	375 contacts →
	Exact match “We protect the world’s critical infrastructure from cyber threats.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
5	horizon3.ai	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	201-500	364 contacts →
	Exact match “Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up?” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
6	At-Bay	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	201-500	348 contacts →
	Exact match “At-Bay is the world’s first InsurSec provider designed from the ground up to help businesses tackle cyber risk head on.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
7	Securitypal AI	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	201-500	263 contacts →
	Exact match “SecurityPal is a Cybersecurity Assurance Management Platform that blends AI-powered automation with expert oversight to help organizations accelerate trust, reduce friction, and…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
8	Vehere	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	201-500	211 contacts →
	Exact match “Vehere is an AI cyber defense company operating at the intersection of national security and enterprise security.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
9	TAC Security	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	51-200	208 contacts →
	Exact match “TAC Security (NSE: TAC) TAC Security, a leading publicly listed global cybersecurity company specializing in vulnerability management, today serves clients across 100 countries…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
10	Jones IT	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	51-200	82 contacts →
	Exact match “At Jones IT, we believe IT should make your life easier- not more complicated.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
11	Bastille	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	51-200	66 contacts →
	Exact match “Bastille is the leader in Wireless Airspace Cybersecurity.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
12	Mondoo	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	51-200	55 contacts →
	Exact match “Mondoo's Agentic Managed Vulnerability Service, a combination of local expert security professionals and a proven AI-native platform, delivers the outcomes security professionals…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
13	Cloudmark	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	51-200	53 contacts →
	Exact match “Cloudmark was acquired by Proofpoint.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
14	Escape	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	43 contacts →
	Exact match “Escape automates the full offensive security lifecycle, multiplying the impact of every security engineer tenfold.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
15	Practical Devsecops	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	40 contacts →
	Exact match “Practical DevSecOps is a global cybersecurity education company specializing in hands-on DevSecOps, AI Security, and Application Security training and certifications.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
16	PCS Technology	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	36 contacts →
	Exact match “At PCS Technology, we know how important it is for nonprofits to trust that their systems are secure and well-managed.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
17	akto.io	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	33 contacts →
	Exact match “Akto is the fastest growing AI Security platform for your teams to secure AI agents, MCPs, LLMs, Agent skills, gen AI apps in your organization.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
18	Strongestlayer	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	51-200	30 contacts →
	Exact match “Enhanced security in minutes and get immediately unparalleled protection.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
19	Upfort	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	29 contacts →
	Exact match “Upfort is a leading platform for cyber security and insurance that provides holistic protection from evolving cyber threats.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
20	Dataway	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	28 contacts →
	Exact match “Dataway, Inc.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
21	Seworks	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	27 contacts →
	Exact match “We specialize in Web Application and API penetration Testing, Cyber Threat Intelligence, and Detecting Account Takeovers (ATOs) from attackers.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
22	Actifile	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	25 contacts →
	Exact match “Actifile helps organizations automate their Data Discovery, Monitoring and Protection needs, addressing external data threats (like ransomware), insider threats (like shadow IT)…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
23	Atomus	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	24 contacts →
	Exact match “A technology driven Managed Security Service Provider purpose built for Aerospace and Defense.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
24	Sentant	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	24 contacts →
	Exact match “Sentant is a next-generation cybersecurity & IT services firm with a team of experienced technology professionals.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
25	Centarus	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	22 contacts →
	Exact match “Centarus is dedicated to providing dependable Managed IT & Cybersecurity support to firms that want to increase efficiency & stay secure.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “cybersecurity services and solutions”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 173 cybersecurity services and solutions based in San Francisco, United States

See the full list, filter by size, metro and specialty, and access 2,824 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity services and solutions based in San Francisco, United States at a glance

As of Sep 24, 2026

20.6%Verified-email coverage

79.3Average contacts per company

11-50Median size (employees)

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 173 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with San Francisco, United States whose business descriptions match “cybersecurity services and solutions” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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: Every displayed company carries at least one verified work email. RevenueBase tracks 2,824 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 24, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Cybersecurity services and solutions by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “cybersecurity services and solutions”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity services and solutions are there based in San Francisco, United States?

RevenueBase identified 173 company matches for cybersecurity services and solutions associated with San Francisco, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Hackerone tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most cybersecurity services and solutions?

New York leads the United States with 457 company records, followed by Houston (271) and Washington (235). San Francisco has 173.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,824 professional contacts with verified work emails tracked across these 173 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 24, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.