Company lists · Data refreshed October 2026

Top 25 Cyberdefense technology providers based in San Jose, United States

Name: Cyberdefense technology providers based in San Jose, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 11, 2026 42 companies tracked

RevenueBase identified 42 company matches for cyberdefense technology providers associated with San Jose, United States as of October 2026 and tracks 15,541 professional contacts across them, including 2,825 with verified work emails. Across the United States, New York is the largest hub for this category (156 companies); San Jose has 42.

This list covers company matches for cyberdefense technology providers 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 11, 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 11, 2026 How this list was built

42Companies

15,541Contacts tracked

2,825Verified emails

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The 25 largest cyberdefense technology providers based in San Jose, United States

Ranked by team size

Top 25 of 42 company matches for cyberdefense technology providers based in San Jose, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 11, 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	Symantec	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	10001+	11,671 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 11, 2026 · View company records in RevenueBase
2	Forescout Technologies INC	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,219 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 11, 2026 · View company records in RevenueBase
3	Netenrich	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	501-1,000	856 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 11, 2026 · View company records in RevenueBase
4	Vectra AI	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	501-1,000	655 contacts →
	Exact match “Vectra AI is the cybersecurity AI leader in protecting modern networks from modern attacks.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
5	Concentric AI	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	201-500	243 contacts →
	Exact match “Concentric AI is intelligent data security made easy.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
6	Axiado Corporation	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	51-200	139 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 11, 2026 · View company records in RevenueBase
7	Stellar Cyber	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	51-200	134 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 11, 2026 · View company records in RevenueBase
8	Exaforce	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	51-200	115 contacts →
	Exact match “At Exaforce, we are on a mission to 10x the productivity and efficacy of security and operations (SOC) teams using our transformative multi-model AI engine.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
9	NST Cyber	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	51-200	112 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 11, 2026 · View company records in RevenueBase
10	Secqureone	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	51-200	46 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 11, 2026 · View company records in RevenueBase
11	PRE Security	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	11-50	37 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 11, 2026 · View company records in RevenueBase
12	Firewalla INC	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	11-50	22 contacts →
	Exact match “Firewalla is dedicated to making accessible cybersecurity solutions that are simple, affordable, and powerful.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
13	Synqly	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	11-50	20 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 11, 2026 · View company records in RevenueBase
14	Reblaze Part Of Link11	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	51-200	17 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 11, 2026 · View company records in RevenueBase
15	Quantum Ventura INC	Exact match	San Jose, United StatesHQ recorded Oct 11, 2026	1-10	17 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
16	Genians	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	51-200	15 contacts →
	Exact match “Genians delivers measurable cybersecurity through NAC, EDR, and Universal ZTNA, turning visibility into verified trust and compliance.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
17	ITQUE	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	11-50	12 contacts →
	Exact match “ITque is a leading Managed IT Security & Services Provider specializing in network and data security.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
18	Esudo Technology Solutions	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	1-10	9 contacts →
	Exact match “Businesses of every size, in every industry, are increasingly dependent on technology.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
19	Narf Industries	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	1-10	8 contacts →
	Exact match “Narf is a global information security company composed of highly skilled reverse engineers, vulnerability researchers and tool developers.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
20	Trustlook AI Cybersecurity	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	11-50	7 contacts →
	Exact match “Trustlook is a global leader in next-generation cybersecurity products based on artificial intelligence.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
21	Guarded Cyber	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	1-10	5 contacts →
	Exact match “Guarded Cyber is a Veteran Owned Managed Cybersecurity Services Provider that offers more than just technical expertise; we provide peace of mind.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
22	Securenomics	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	11-50	4 contacts →
	Exact match “Securenomics is a distributor of Netskope, Cisco Security, Cato Networks and Cyberhaven Security services, empowering channel partners to offer customers the security they need to…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
23	Sharkbyte Tech	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	11-50	3 contacts →
	Exact match “SharkByte Tech lowers the technical and financial barriers for companies needing to manage risk, protect critical data, and demonstrate compliance while improving their visibility…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
24	Portal Robotics	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	1-10	3 contacts →
	Exact match “VS Platform-the enterprise control plane for securely deploying and managing AI and applications across distributed edge environments.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
25	Ghangorcloud	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	11-50	2 contacts →
	Exact match “GhangorCloud is a leading provider of Cyber Security solutions enabling defense against most sophisticated Cyber Attacks on Information and Data Repositories and Applications.” Recorded in the RevenueBase company graph · Oct 11, 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 “cyberdefense technology providers”. 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 42 cyberdefense technology providers based in San Jose, United States

See the full list, filter by size, metro and specialty, and access 2,825 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cyberdefense technology providers based in San Jose, United States at a glance

As of Oct 11, 2026

18.2%Verified-email coverage

370.0Average contacts per company

11-50Median size (employees)

Oct 11, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 42 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 “cyberdefense technology providers” 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 2,825 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 11, 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.

Cyberdefense technology providers 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 “cyberdefense technology providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cyberdefense technology providers are there based in San Jose, United States?

RevenueBase identified 42 company matches for cyberdefense technology providers 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 cyberdefense technology providers?

New York leads the United States with 156 company records, followed by San Francisco (91) and Austin (89). San Jose has 42.

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 2,825 professional contacts with verified work emails tracked across these 42 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 11, 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.