Company lists · Data refreshed September 2026
Top 25 Security consultancies based in San Francisco, United States
RevenueBase identified 86 security consultancies headquartered in San Francisco, United States as of September 2026 and tracks 819 professional contacts across them, including 165 with verified work emails. New York is the largest hub.
This list covers security consultancies headquartered in San Francisco, 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 security consultancies based in San Francisco, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 218 contacts → | ||||
Partial evidence “At ProGuard Security Services, we are unwavering in our commitment to achieving 100% accuracy through operational execution.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 34 contacts → | ||||
Indirect evidence “Global Secure 3 (GS3) is an international firm that provides risk management and investigation services to corporate and public sector organizations.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 28 contacts → | ||||
Indirect evidence “Dataway, Inc.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 27 contacts → | ||||
Partial evidence “Treeline Security combines the personal touch of a small, client-focused team, with the extensive reach and resources of a large network.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 24 contacts → | ||||
Partial evidence “A technology driven Managed Security Service Provider purpose built for Aerospace and Defense.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 24 contacts → | ||||
Indirect evidence “Sentant is a next-generation cybersecurity & IT services firm with a team of experienced technology professionals.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 21 contacts → | ||||
Indirect evidence “TachTech, is an engineering-led AI and cybersecurity services firm headquartered in San Francisco and Washington, DC.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 11 contacts → | ||||
Partial evidence “Truvantis is a security, privacy and compliance consulting firm providing best-in-class services to secure your organization's infrastructure, data, operations and products.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 10 contacts → | ||||
Partial evidence “At Securisea, we are trusted and proven experts in compliance and security.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 9 contacts → | ||||
Partial evidence “The fundamental goal of CSS is to be an outstanding security organization dedicated to serving the Clients of CSS and the Public’s Safety, through its Officers, with effectiveness…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 7 contacts → | ||||
Partial evidence “EAmmune (pronounced like Immune) is a boutique firm that advises Executives on data asset and cyber-security risk-related matters and helps organizations achieve their data…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 6 contacts → | ||||
Indirect evidence “Humanize is an innovative and data-conscious company that transforms cybersecurity weaknesses to human readable quantified risks for C-Suite.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 5 contacts → | ||||
Indirect evidence “We help clients design “trust” into their next-generation electronic and software-based products to ensure the platforms and the digital data they create and manage are protected…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 5 contacts → | ||||
Partial evidence “Who we are: We are a women- and minority-owned company, a diverse team of compliance professionals, auditors, and information security experts who are creating standards of…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 5 contacts → | ||||
Indirect evidence “Fraud doesn’t break in.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 contacts → | ||||
Indirect evidence “Dogpatch Solutions is a leading IT consulting firm that specializes in cybersecurity assessments, migrations, networking and cloud computing solutions.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 contacts → | ||||
Partial evidence “Security Operations Center • Litigation Support • Forensic Lab Email: usdnlab@usdn.net Global Toll Free: 866.930.4312 Non-Emergency: PGP Key: usdnlab@usdn.net -BEGIN PGP PUBLIC…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 contacts → | ||||
Partial evidence “Our startup is dedicated to providing comprehensive security solutions for low-code/no-code products.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 contacts → | ||||
Indirect evidence “At XIVX Risk & Threat Intelligence, we help groups minimize risk, understand threats, and achieve compliance the right way: through functional and effective cybersecurity.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3 contacts → | ||||
Partial evidence “1 Cerberus Security & Patrol is a licensed company founded on the principles of professionalism and excellence of service!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Indirect evidence “Cybersecurity by Design, we help organizations with their cybersecurity and compliance programs through management and sustainability, consulting, and assessing.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Indirect evidence “Consult Our Source is a Certified Small Disadvantaged Business, Minority Owned, and headquartered in San Francisco; specializing in complex environments in Information Technology…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Partial evidence “SOTR Solutions is a one-stop security consultancy offering "Security as a Strategy" and “Security as a Service.” We provide end-to-end guidance to create and run a security…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Partial evidence “Headquartered in the Bay Area, our firm assists businesses running on AWS with a desire to offer superior security guarantees to their customers.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 contacts → | ||||
Indirect evidence “SecureNexa is a global cybersecurity partner for small and mid-sized businesses.” 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: security consultancies. 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 security consultancies.
- Partial evidence
- Its own public description names part of security consultancies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name security consultancies. 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 86 security consultancies based in San Francisco, United States
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Security consultancies based in San Francisco, 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 Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 86 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 security consultancies, 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 Francisco, United States whose own description of what they do matches “security consultancies”. 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 security consultancies), 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 security consultancies, and records with no verified work email. Companies headquartered outside San Francisco 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, 165 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.
Security consultancies by metro in the United States
- Security consultancies in New York255
- Security consultancies in Washington175
- Security consultancies in Houston155
- Security consultancies in Los Angeles130
- Security consultancies in Atlanta127
- Security consultancies in Miami123
- Security consultancies in Dallas122
- Security consultancies in Austin113
- Security consultancies in Chicago110
- Security consultancies in San Francisco86
- Security consultancies in Tampa77
- Security consultancies in Arlington71
- Security consultancies in Denver68
- Security consultancies in San Diego66
- Security consultancies in Boston62
- Security consultancies in Charlotte62
- Security consultancies in Seattle61
- Security consultancies in Orlando60
- Security consultancies in Las Vegas59
- Security consultancies in Phoenix54
- Security consultancies in San Antonio53
- Security consultancies in Alexandria48
- Security consultancies in Raleigh44
- Security consultancies in Baltimore40
- Security consultancies in Columbia40
- Security consultancies in Minneapolis38
- Security consultancies in Portland36
- Security consultancies in Mclean35
- Security consultancies in Philadelphia35
- Security consultancies in Colorado Springs33
- Security consultancies in Columbus32
- Security consultancies in Jacksonville32
- Security consultancies in Pittsburgh32
- Security consultancies in Scottsdale32
- Security consultancies in Ashburn31
- Security consultancies in Fort Lauderdale31
- Security consultancies in Nashville31
- Security consultancies in Reston31
- Security consultancies in Richmond30
- Security consultancies in San Jose30
- Security consultancies in Plano29
- Security consultancies in Wilmington29
- Security consultancies in Sheridan28
- Security consultancies in Huntsville27
- Security consultancies in Herndon25
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 security consultancies, 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 security consultancies are there based in San Francisco, United States?
RevenueBase identified 86 security consultancies headquartered in San Francisco, 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?
Proguard Security Services, headquartered in San Francisco, tops this list with the largest team on record.
Which city has the most security consultancies?
New York leads with 255 headquartered companies, followed by Washington (175) and Houston (155).
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 165 verified decision-maker contacts tracked across these 86 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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