Company lists · Data refreshed September 2026
Top 25 Cybersecurity advisory firms based in San Jose, United States
RevenueBase identified 47 cybersecurity advisory firms headquartered in San Jose, United States as of September 2026 and tracks 14,480 professional contacts across them, including 2,769 with verified work emails. New York is the largest hub.
This list covers cybersecurity advisory firms 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 21, 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.
The 25 largest cybersecurity advisory firms based in San Jose, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 11,169 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 651 contacts → | ||||
Partial evidence “Vectra AI is the cybersecurity AI leader in protecting modern networks from modern attacks.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 49 contacts → | ||||
Indirect evidence “Quokka discovers and delivers actionable mobile security intelligence to enable proactive remediation of zero-day vulnerabilities, before they become incidents that threaten…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 44 contacts → | ||||
Indirect evidence “Building an effective cyber security program from scratch is time consuming and expensive.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 43 contacts → | ||||
Indirect 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 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 23 contacts → | ||||
Partial evidence “Firewalla is dedicated to making accessible cybersecurity solutions that are simple, affordable, and powerful.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 19 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 18 contacts → | ||||
Partial evidence “At Bravo Consulting, we believe that cybersecurity doesn’t have to be complicated.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 17 contacts → | ||||
Indirect evidence “Apogee Global RMS is a U.S.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 15 contacts → | ||||
Indirect evidence “A not-for-profit consortium helping 500+ cities and organizations achieve desirable and trusted cyber risk postures with legally defensible strategies and execution.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 14 contacts → | ||||
Indirect evidence “SJULTRA is a Cloud Security Consulting firm based in California.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 14 contacts → | ||||
Indirect evidence “WHO WE ARE An IT Network Consulting company specializing in network security, network design, implementation and support for Data, Wireless, and Voice networks.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 12 contacts → | ||||
Partial evidence “Genians delivers measurable cybersecurity through NAC, EDR, and Universal ZTNA, turning visibility into verified trust and compliance.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 11 contacts → | ||||
Indirect evidence “ITque is a leading Managed IT Security & Services Provider specializing in network and data security.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 11 contacts → | ||||
Indirect evidence “At Cygne Noir Cyber, we believe that security and intelligence go hand in hand.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 10 contacts → | ||||
Indirect evidence “Cloud 1 Solutions provides Managed IT and Security Services for your organization.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 7 contacts → | ||||
Indirect evidence “Businesses of every size, in every industry, are increasingly dependent on technology.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 5 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 5 contacts → | ||||
Partial evidence “Guarded Cyber is a Veteran Owned Managed Cybersecurity Services Provider that offers more than just technical expertise; we provide peace of mind.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 4 contacts → | ||||
Partial evidence “Sentinel Resource Group is an intelligence-led risk advisory firm serving distinguished family offices, privately held companies, elite law firms, private banks, and Fortune 50…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 4 contacts → | ||||
Indirect evidence “WHAT WE DO We Provide a Comprehensive CYBER SECURITY SOLUTIONS AND CONSULTING SERVICES that Protect organizations information assets against a range of cyber threats & Mitigate…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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 advisory firms. 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 advisory firms.
- Partial evidence
- Its own public description names part of cybersecurity advisory firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name cybersecurity advisory firms. 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 47 cybersecurity advisory firms based in San Jose, United States
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Cybersecurity advisory firms based in San Jose, United States at a glance
As of Sep 21, 2026Companies by employee count
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 47 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 advisory firms, 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 advisory firms”. 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 advisory firms), 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 advisory firms, 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, 2,769 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 21, 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 advisory firms by metro in the United States
- Cybersecurity advisory firms in New York302
- Cybersecurity advisory firms in Washington212
- Cybersecurity advisory firms in Austin168
- Cybersecurity advisory firms in Atlanta164
- Cybersecurity advisory firms in Houston148
- Cybersecurity advisory firms in Dallas140
- Cybersecurity advisory firms in San Francisco135
- Cybersecurity advisory firms in Miami130
- Cybersecurity advisory firms in Chicago127
- Cybersecurity advisory firms in Tampa109
- Cybersecurity advisory firms in Arlington92
- Cybersecurity advisory firms in Los Angeles88
- Cybersecurity advisory firms in San Diego87
- Cybersecurity advisory firms in Boston83
- Cybersecurity advisory firms in Denver83
- Cybersecurity advisory firms in Columbia74
- Cybersecurity advisory firms in Charlotte70
- Cybersecurity advisory firms in Seattle70
- Cybersecurity advisory firms in Alexandria69
- Cybersecurity advisory firms in Reston69
- Cybersecurity advisory firms in San Antonio66
- Cybersecurity advisory firms in Orlando65
- Cybersecurity advisory firms in Las Vegas62
- Cybersecurity advisory firms in Phoenix60
- Cybersecurity advisory firms in Baltimore50
- Cybersecurity advisory firms in Mclean50
- Cybersecurity advisory firms in Fairfax47
- Cybersecurity advisory firms in San Jose47
- Cybersecurity advisory firms in Huntsville46
- Cybersecurity advisory firms in Sheridan46
- Cybersecurity advisory firms in Raleigh45
- Cybersecurity advisory firms in Portland44
- Cybersecurity advisory firms in Plano43
- Cybersecurity advisory firms in Colorado Springs42
- Cybersecurity advisory firms in Wilmington42
- Cybersecurity advisory firms in Minneapolis39
- Cybersecurity advisory firms in Ashburn38
- Cybersecurity advisory firms in Pittsburgh38
- Cybersecurity advisory firms in Dover35
- Cybersecurity advisory firms in Nashville35
- Cybersecurity advisory firms in Philadelphia35
- Cybersecurity advisory firms in Columbus34
- Cybersecurity advisory firms in Scottsdale34
- Cybersecurity advisory firms in Richmond33
- Cybersecurity advisory firms in Herndon32
- Cybersecurity advisory firms in Vienna32
- Cybersecurity advisory firms in Fort Lauderdale31
- Cybersecurity advisory firms in Irvine29
- Cybersecurity advisory firms in Sacramento29
- Cybersecurity advisory firms in Alpharetta28
- Cybersecurity advisory firms in Indianapolis28
- Cybersecurity advisory firms in Chantilly27
- Cybersecurity advisory firms in Frisco27
- Cybersecurity advisory firms in Springfield27
- Cybersecurity advisory firms in Salt Lake City26
- Cybersecurity advisory firms in Detroit25
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 advisory firms, 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 advisory firms are there based in San Jose, United States?
RevenueBase identified 47 cybersecurity advisory firms 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?
Symantec, headquartered in San Jose, tops this list with the largest team on record.
Which city has the most cybersecurity advisory firms?
New York leads with 302 headquartered companies, followed by Washington (212) and Austin (168).
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 2,769 verified decision-maker contacts tracked across these 47 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 21, 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.
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