Company lists · Data refreshed September 2026

Top 23 IT security consulting firms based in San Francisco, United States

Name: IT security consulting firms based in San Francisco, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 93 companies tracked

RevenueBase identified 93 IT security consulting firms headquartered in San Francisco, United States as of September 2026 and tracks 533 professional contacts across them, including 118 with verified work emails. New York is the largest hub.

This list covers IT security consulting firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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 HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

93Companies

533Contacts tracked

118Verified emails

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The 23 largest IT security consulting firms based in San Francisco, United States

Ranked by team size

Top 23 of 93 IT security consulting firms based in San Francisco, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT security consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	SentantPartial evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	11-50	24
	“Sentant is a next-generation cybersecurity & IT services firm with a team of experienced technology professionals.” Source: company website · checked Sep 4, 2026
2	TachtechIndirect evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	11-50	21
	“TachTech is an engineering-first AI and Cybersecurity services firm headquartered in San Francisco and Washington, DC.” Source: company website · checked Sep 4, 2026
3	FoxcovePartial evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	11-50	15
	“We’re Foxcove-your IT partner for secure systems, fast support, and fractional tech leadership.” Source: company website · checked Sep 4, 2026
4	YsecurityIndirect evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	11-50	14
	“We are a team of cybersecurity operators from Silicon Valley.” Source: company website · checked Sep 4, 2026
5	InfovieIndirect evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	51-200	13
	“Infovie is the de facto Partner of choice for many CIOs Globally Today.” Source: company website · checked Sep 4, 2026
6	Truvantis, INCStrong evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	11-50	11
	“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: company website · checked Sep 4, 2026
7	SecuriseaPartial evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	11-50	10
	“At Securisea, we are trusted and proven experts in compliance and security.” Source: company website · checked Sep 4, 2026
8	EammunePartial evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	11-50	7
	“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: company website · checked Sep 4, 2026
9	Humanize, INCIndirect evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	11-50	6
	“Humanize is an innovative and data-conscious company that transforms cybersecurity weaknesses to human readable quantified risks for C-Suite.” Source: company website · checked Sep 4, 2026
10	Trustiphi, LLCIndirect evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	11-50	5
	“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: company website · checked Sep 4, 2026
11	Harmony IntelligenceIndirect evidence	San Francisco, United StatesHQ checked Sep 4, 2026	1-10	5
	“We provide AI-powered, human-backed whitebox pentests for web apps & APIs that uncover critical vulns others miss.” Source: company website · checked Sep 4, 2026
12	Startup DefenseIndirect evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	11-50	5
	“Enterprise Cybersecurity Made Simple” Source: company website · checked Sep 4, 2026
13	Dogpatch Solutions INCStrong evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	1-10	4
	“Dogpatch Solutions is a leading IT consulting firm that specializes in cybersecurity assessments, migrations, networking and cloud computing solutions.” Source: company website · checked Sep 4, 2026
14	Blacksmith InfosecPartial evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	1-10	4
	“Blacksmith InfoSec helps small and medium businesses forge information security programs” Source: company website · checked Sep 4, 2026
15	909cyberPartial evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	1-10	4
	“909Cyber is a cybersecurity firm offering expert software sales, consulting and resourcing services.” Source: company website · checked Sep 4, 2026
16	Aleada ConsultingPartial evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	1-10	4
	“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: company website · checked Sep 4, 2026
17	Yes-Security INCPartial evidence	San Francisco, United StatesHQ checked Sep 4, 2026	1-10	4
	“Our startup is dedicated to providing comprehensive security solutions for low-code/no-code products.” Source: company website · checked Sep 4, 2026
18	Consult OUR Source, LLCIndirect evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	1-10	3
	“Consult Our Source is a Certified Small Disadvantaged Business, Minority Owned, and headquartered in San Francisco; specializing in complex environments in Information Technology…” Source: company website · checked Sep 4, 2026
19	ServadusPartial evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	1-10	3
	“Cybersecurity by Design, we help organizations with their cybersecurity and compliance programs through management and sustainability, consulting, and assessing.” Source: company website · checked Sep 4, 2026
20	MaranaPartial evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	1-10	3
	“Headquartered in the Bay Area, our firm assists businesses running on AWS with a desire to offer superior security guarantees to their customers.” Source: company website · checked Sep 4, 2026
21	Sotr SolutionsPartial evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	1-10	3
	“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: company website · checked Sep 4, 2026
22	Itasc SolutionsIndirect evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	11-50	2
	“Our core values are to strive for excellence, act with integrity, and bring the best results to your business.” Source: company website · checked Sep 4, 2026
23	Socialproof SecurityPartial evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	1-10	2
	“Defend against cyber criminals with engaging security awareness and social engineering prevention videos, training, talks and penetration testing.” Source: company website · checked Sep 4, 2026

Showing 23 of 93 IT security consulting firms based in San Francisco, United States

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IT security consulting firms based in San Francisco, United States at a glance

As of Sep 4, 2026

1-10Median size (employees)

New YorkLargest hub · 239 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 93 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 IT security consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “IT security consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among IT security consulting firms, 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 an evidence 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, 118 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 4, 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.

IT security consulting firms by metro in the United States

Frequently asked

How many IT security consulting firms are there based in San Francisco, United States?

RevenueBase identified 93 IT security consulting firms 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?

Sentant, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most IT security consulting firms?

New York leads with 239 headquartered companies, followed by Houston (148) and Atlanta (139).

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 118 verified decision-maker contacts tracked across these 93 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 4, 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.