Company lists · Data refreshed October 2026

Top 25 Cybersecurity firms based in San Jose, United States

RevenueBase identified 66 company matches for cybersecurity firms associated with San Jose, United States as of October 2026 and tracks 15,606 professional contacts across them, including 3,366 with verified work emails. Across the United States, New York is the largest hub for this category (358 companies); San Jose has 66.

This list covers company matches for cybersecurity firms associated with San Jose, 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 October 1, 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 Oct 1, 2026 How this list was built
66Companies
15,606Contacts tracked
3,366Verified emails
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The 25 largest cybersecurity firms based in San Jose, United States

Ranked by team size
Top 25 of 66 company matches for cybersecurity firms based in San Jose, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202610001+11,169 contacts →

Exact match

“Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 20261,001-5,0001,181 contacts →

Exact match

“As AI-driven vulnerability and exploitation accelerate attack velocity to machine speed, Forescout is a foundational cyber defense layer that allows organizations to segment and…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 2026501-1,000889 contacts →

Exact match

“Netenrich is redefining security operations by shifting the focus from "efficiency"(speed) to "efficacy"(comprehensive coverage).”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 2026501-1,000651 contacts →

Exact match

“Vectra AI is the cybersecurity AI leader in protecting modern networks from modern attacks.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 2026201-500287 contacts →

Exact match

“ColorTokens, the leading enterprise microsegmentation company, stops the lateral spread of ransomware and malware within an organization’s diverse network topology.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 2026201-500202 contacts →

Exact match

“Concentric AI is intelligent data security made easy.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202651-200133 contacts →

Exact match

“By shining a bright light on the darkest corners of security operations, Stellar Cyber empowers organizations to see incoming attacks, know how to fight them, and act decisively –…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202651-200124 contacts →

Exact match

“Axiado is a leading hardware-anchored platform security solutions company deploying a novel, AI-driven approach to platform security against ransomware, supply chain…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202651-200116 contacts →

Exact match

“NST Cyber is a leading provider of Threat Exposure Management to Global banks and Forbes companies.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202611-50103 contacts →

Exact match

“FireCompass is an Agentic AI platform for autonomous penetration testing and red teaming across Web, API, and infrastructure.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202651-20083 contacts →

Exact match

“Balbix enables enterprises to reduce cyber risk faster and prove the impact in business terms.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202651-20055 contacts →

Exact match

“Axiad is an identity security company tackling the critical threats posed by compromised credentials, which account for over 70% of enterprise breaches.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202611-5049 contacts →

Exact match

“Quokka discovers and delivers actionable mobile security intelligence to enable proactive remediation of zero-day vulnerabilities, before they become incidents that threaten…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202611-5044 contacts →

Exact match

“Building an effective cyber security program from scratch is time consuming and expensive.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202651-20043 contacts →

Exact match

“SecqureOne (SQ1) is a Silicon Valley based end-to-end cyber security and compliance solution provider serving businesses globally over the last 17 years.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202611-5034 contacts →

Exact match

“TruAdvantage is a Bay Area-based, award-winning IT firm that specializes in managed IT, managed Cybersecurity, managed Compliance and Cloud solutions.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202611-5034 contacts →

Exact match

“PRE Security is leading the way to a new era of proactive, predictive cybersecurity with our AI Native Predictive SecOps platform.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202611-5023 contacts →

Exact match

“Firewalla is dedicated to making accessible cybersecurity solutions that are simple, affordable, and powerful.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202651-20019 contacts →

Exact match

“Link11 and Reblaze have united to provide comprehensive, enterprise-grade cybersecurity solutions, making the Internet safer for businesses of all sizes.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202611-5018 contacts →

Exact match

“At Bravo Consulting, we believe that cybersecurity doesn’t have to be complicated.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202611-5017 contacts →

Exact match

“Synqly is building a stronger, more connected cybersecurity integration ecosystem with AI-enabled integrations that remove development barriers and unlock the full potential of…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202611-5017 contacts →

Exact match

“Apogee Global RMS is a U.S.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23Exact matchSan Jose, United StatesHQ recorded Oct 1, 20261-1016 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202651-20015 contacts →

Exact match

“Sonitrol, Pacific West Security, has more than forty years of success providing verified electronic security solutions for Northern California and Utah businesses.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 202611-5014 contacts →

Exact match

“WHO WE ARE An IT Network Consulting company specializing in network security, network design, implementation and support for Data, Wireless, and Voice networks.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 25 of 66 cybersecurity firms based in San Jose, United States

See the full list, filter by size, metro and specialty, and access 3,366 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity firms based in San Jose, United States at a glance

As of Oct 1, 2026
21.6%Verified-email coverage
236.5Average contacts per company
11-50Median size (employees)
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
21
11-50
25
51-200
13
201-500
2
501-1,000
2
1,001-5,000
2
10001+
1

Email recency for this list is measured across the whole United States list rather than for San Jose, so it is reported there. Company counts and contact totals on this page are exact for San Jose, over 66 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 Jose, United States whose business descriptions match “cybersecurity firms” 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 3,366 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 October 1, 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 firms 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 firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity firms are there based in San Jose, United States?

RevenueBase identified 66 company matches for cybersecurity firms associated with San Jose, United States as of October 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?

Symantec 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 firms?

New York leads the United States with 358 company records, followed by Austin (182) and San Francisco (182). San Jose has 66.

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 3,366 professional contacts with verified work emails tracked across these 66 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 October 1, 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.