Company lists · Data refreshed September 2026

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

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

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 85 companies tracked

RevenueBase identified 85 cybersecurity services and solutions headquartered in San Jose, United States as of September 2026 and tracks 155,624 professional contacts across them, including 30,348 with verified work emails. New York is the largest hub.

This list covers cybersecurity services and solutions headquartered in San Jose, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 24, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 24, 2026 86% judged on-target in blind review

85Companies

155,624Contacts tracked

30,348Verified emails

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

Ranked by team size

Top 25 of 85 cybersecurity services and solutions based in San Jose, United States, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity services and solutions: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	CISCO	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	10001+	137,277 contacts →
	Indirect evidence “Cisco is the worldwide technology leader that is revolutionizing the way organizations connect and protect in the AI era.” Source: RevenueBase Database · checked Sep 24, 2026
2	Symantec	Strong evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	10001+	11,169 contacts →
	Strong evidence “Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Source: RevenueBase Database · checked Sep 24, 2026
3	Forescout Technologies INC	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,181 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 24, 2026
4	Crest Data	Strong evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,119 contacts →
	Strong evidence “Crest Data is a data and AI-driven technology solutions provider helping global enterprises and technology innovators accelerate digital evolution across Cybersecurity and…” Source: RevenueBase Database · checked Sep 24, 2026
5	Netenrich	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	501-1,000	889 contacts →
	Indirect evidence “Netenrich is redefining security operations by shifting the focus from "efficiency"(speed) to "efficacy"(comprehensive coverage).” Source: RevenueBase Database · checked Sep 24, 2026
6	Allied Telesis	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	816 contacts →
	Indirect evidence “Our world is increasing in complexity.” Source: RevenueBase Database · checked Sep 24, 2026
7	A10 Networks, INC	Partial evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	501-1,000	673 contacts →
	Partial evidence “A10 Networks provides security and infrastructure solutions for on-premises, hybrid cloud, and edge-cloud environments.” Source: RevenueBase Database · checked Sep 24, 2026
8	Vectra AI	Partial evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	501-1,000	651 contacts →
	Partial evidence “Vectra AI is the cybersecurity AI leader in protecting modern networks from modern attacks.” Source: RevenueBase Database · checked Sep 24, 2026
9	Skyhigh Security	Partial evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	501-1,000	640 contacts →
	Partial evidence “Skyhigh Security protects organizations with cloud-native security solutions that are both data-aware and simple to use.” Source: RevenueBase Database · checked Sep 24, 2026
10	Catalyst Business Partners	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	51-200	172 contacts →
	Indirect evidence “Catalyst is a digital consulting firm headquartered in Silicon Valley, with operations in over 15 countries across EMEA.” Source: RevenueBase Database · checked Sep 24, 2026
11	Axiado Corporation	Partial evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	51-200	124 contacts →
	Partial evidence “Axiado is a leading hardware-anchored platform security solutions company deploying a novel, AI-driven approach to platform security against ransomware, supply chain…” Source: RevenueBase Database · checked Sep 24, 2026
12	Whitehat Dynamic By Synopsys	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	201-500	89 contacts →
	Indirect evidence “NTT Application Security is driving the future of application security.” Source: RevenueBase Database · checked Sep 24, 2026
13	Opalsoft	Indirect evidence	San Jose, United StatesHQ checked Sep 24, 2026	51-200	63 contacts →
	Indirect evidence “Opal Soft is a professional services company focused in information technology.” Source: RevenueBase Database · checked Sep 24, 2026
14	Armature Systems	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	11-50	44 contacts →
	Indirect evidence “Building an effective cyber security program from scratch is time consuming and expensive.” Source: RevenueBase Database · checked Sep 24, 2026
15	Secqureone	Partial evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	51-200	43 contacts →
	Partial evidence “SecqureOne (SQ1) is a Silicon Valley based end-to-end cyber security and compliance solution provider serving businesses globally over the last 17 years.” Source: RevenueBase Database · checked Sep 24, 2026
16	Ziontech Solutions INC	Partial evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	51-200	42 contacts →
	Partial evidence “Ziontech is a trusted, security focused, end to end systems integrator; implementing strategic and flexible solution, customized to customer’s need with a wide enterprise security…” Source: RevenueBase Database · checked Sep 24, 2026
17	Crest Data Systems	Partial evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	39 contacts →
	Partial evidence “Crest Data Systems is a leading provider of custom solutions in the areas of Data Analytics, Cyber Security, ITOps/AIOps, DevOps, and Cloud based in the Bay Area, California.” Source: RevenueBase Database · checked Sep 24, 2026
18	Truadvantage	Strong evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	11-50	34 contacts →
	Strong evidence “TruAdvantage is a Bay Area-based, award-winning IT firm that specializes in managed IT, managed Cybersecurity, managed Compliance and Cloud solutions.” Source: RevenueBase Database · checked Sep 24, 2026
19	PRE Security	Partial evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	11-50	34 contacts →
	Partial evidence “PRE Security is leading the way to a new era of proactive, predictive cybersecurity with our AI Native Predictive SecOps platform.” Source: RevenueBase Database · checked Sep 24, 2026
20	Firewalla INC	Strong evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	11-50	23 contacts →
	Strong evidence “Firewalla is dedicated to making accessible cybersecurity solutions that are simple, affordable, and powerful.” Source: RevenueBase Database · checked Sep 24, 2026
21	Stallion SI	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	11-50	23 contacts →
	Indirect evidence “About Stallion SI Technologies Delivery-first IT engineering for secure, scalable, real-world environments Stallion SI Technologies is a delivery-first IT professional services…” Source: RevenueBase Database · checked Sep 24, 2026
22	Reblaze Part Of Link11	Strong evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	51-200	19 contacts →
	Strong evidence “Link11 and Reblaze have united to provide comprehensive, enterprise-grade cybersecurity solutions, making the Internet safer for businesses of all sizes.” Source: RevenueBase Database · checked Sep 24, 2026
23	Bravo Consulting	Partial evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	11-50	18 contacts →
	Partial evidence “At Bravo Consulting, we believe that cybersecurity doesn’t have to be complicated.” Source: RevenueBase Database · checked Sep 24, 2026
24	Cornerstone Technologies	Partial evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	11-50	17 contacts →
	Partial evidence “Cornerstone Technologies has a history of innovation, a storied legacy of IT solutions, serving so many to date, and being trusted by some of the largest organizations in the…” Source: RevenueBase Database · checked Sep 24, 2026
25	Synqly	Partial evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	11-50	17 contacts →
	Partial evidence “Synqly is building a stronger, more connected cybersecurity integration ecosystem with AI-enabled integrations that remove development barriers and unlock the full potential of…” Source: RevenueBase Database · checked Sep 24, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: cybersecurity services and solutions. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names cybersecurity services and solutions.
Partial evidence: Its own public description names part of cybersecurity services and solutions, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity services and solutions. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 85 cybersecurity services and solutions based in San Jose, United States

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

As of Sep 24, 2026

19.5%Verified-email coverage

1830.9Average contacts per company

11-50Median size (employees)

537.6%Largest-city concentration · New York

Sep 24, 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 85 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among cybersecurity services and solutions, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in San Jose, United States whose own description of what they do matches “cybersecurity services and solutions”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names cybersecurity services and solutions), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among cybersecurity services and solutions, and records with no verified work email. Companies headquartered outside San Jose are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 30,348 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Cybersecurity services and solutions by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names cybersecurity services and solutions, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 85 cybersecurity services and solutions headquartered in San Jose, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

CISCO, headquartered in San Jose, tops this list with the largest team on record.

Which city has the most cybersecurity services and solutions?

New York leads with 457 headquartered companies, followed by Houston (271) and Washington (235).

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 30,348 verified decision-maker contacts tracked across these 85 companies.

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 Smart Search, 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.