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List of cybersecurity companies in San Francisco

Tamtam tracks 42 cybersecurity companies headquartered in San Francisco. This list ranks all of them by number of employees on LinkedIn, led by Splunk, Okta and Cloudflare. Their median headcount is 334. Half of them were founded in 2015 or later.

๐Ÿ‡บ๐Ÿ‡ธ San Francisco42 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Splunksplunk.com

Providing organizations with a unified security and observability platform to ensure operational resilience in the face of digital disruptions

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 8,820 n/a
2
Oktaokta.com

A platform that prioritizes identity management by offering neutrality, power, and flexibility, tailored to various industries, use cases, and support levels

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 7,522 2009
3
Cloudflarecloudflare.com

The company is a leading connectivity cloud provider, empowering organizations to enhance speed and security while reducing complexity and cost

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 7,489 2009
4
HackerOnehackerone.com

A global leader in human-powered security, leveraging human ingenuity and AI to find critical security flaws and reduce threat exposure

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 7,165 2012
5
Elasticelastic.co

This company specializes in Enterprise Search, Observability, and Security solutions to enhance customer and employee experiences, ensure smooth application performance, and protect against cyber threats

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 5,089 n/a
6
Bugcrowdbugcrowd.com

Connects organizations with trusted hackers via an AI-powered platform to proactively protect digital assets from advanced threats before attacks occur, ensuring continuous security.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 3,740 2012
7
Vantavanta.com

Automates compliance, manages risk, and proves trust for businesses through an AI-powered platform, offering tools for audits, vendor risk, and security questionnaires.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 1,882 2018
8
Mozillamozilla.org

This company designs, builds, and distributes software (including the Firefox browser) to ensure an open and accessible internet for all

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 1,766 2005
9
Fastlyfastly.com

Enhance websites and applications by leveraging Fastly's edge cloud platform, catering to popular brands like Reddit, Pinterest, and Stripe

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 1,415 2011
10
Criblcribl.io

Cribl empowers tech professionals with open observability solutions, offering freedom and flexibility to control data flow and maximize investments

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 1,226 2018
11
Armisarmis.com

Protects entire attack surface, manages cyber risk exposure in real time for critical assets, ensuring continuous visibility and security across all environments.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 1,083 2015
12
Coalition, Inc.coalitioninc.com

A pioneering Active Insurance provider combining coverage and cybersecurity tools to proactively manage and mitigate digital risks for businesses globally

Insurance ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 708 2017
13
Incodeincode.com

Provides an AI-driven platform for accurate identity verification, automating security, maximizing conversions, and preventing fraud for enterprises across various industries.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 665 2015
14
Sysdigsysdig.com

Helps security, development teams prevent, detect, respond cloud threats, with real-time defense, correlating signals across workloads, identities, services, exposing hidden attack paths, active risk.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 619 2013
15
Cobaltcobalt.io

Pioneering pentesting as a service, combining talent and technology for fast, scalable offensive security. Helps organizations identify and fix vulnerabilities, accelerating risk mitigation.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 593 2013
16
Hexnodehexnode.com

Offers AI-powered solutions to streamline endpoint management, user identity, and threat defense for businesses, improving visibility, control, and compliance.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 512 2013
17
VGSvgs.io

A leading cloud-based tokenization platform offering solutions for PCI descoping, payments orchestration, and transaction data consolidation to protect sensitive financial information

Financial Services ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 471 2015
18
Upwind Securityupwind.io

Bridges cloud intelligence from runtime to build-time, eliminating friction and boosting productivity for developers, security engineers, and DevOps. Delivers comprehensive cloud security.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 449 2022
19
TRM Labstrmlabs.com

A blockchain intelligence company detecting and investigating crypto-related financial crime and fraud to safeguard the financial system

Information Services ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 423 2018
20
Nozomi Networksnozominetworks.com

Protects critical infrastructure from cyber threats using network, endpoint visibility, threat detection, and AI analysis for faster incident response.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 392 2013
21
Sardinesardine.ai

A leading company in financial crime prevention, using advanced technology to detect and prevent fraud, money laundering, and other illicit activities for over 250 clients

Financial Services ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 334 2020
22
AutoRABITautorabit.com

AutoRABIT provides DevSecOps tools for Salesforce developers to increase release velocity, improve code quality, enhance data security, and optimize development processes

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 277 2015
23
Zlurizluri.com

It provides a platform for identity governance, streamlining access management, and automating access reviews for compliance and security purposes.

Technology, Information and Internet ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 269 2020
24
Semgrepsemgrep.dev

Provides code security platform unifying SAST, SCA, and secrets scanning, embedding protection directly into development workflow, uncovering and fixing real vulnerabilities faster.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 264 2017
25
Siftsift.com

Leading fraud prevention platform, delivering digital trust to global brands, stopping fraud, enabling customer experience excellence, converting risk to revenue.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 263 2011
26
Riottryriot.com

The company creates a platform that helps organizations prepare their employees for cyberattacks in an engaging way to prevent human errors

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 243 2020
27
ForgeRock (Now Ping Identity)pingidentity.com

Delivers modern and comprehensive Identity and Access Management solutions for consumers, employees, and things to simply and safely access the connected world.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 238 2010
28
Veherevehere.com

Leading cybersecurity company operating at national and enterprise security. Provides AI-powered network intelligence processing petabytes of data to detect threats in real-time.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 220 2006
29
Odasevaodaseva.com

Odaseva helps large Salesforce customers manage, protect, and move their data to ensure business continuity, compliance with regulations, and system optimization

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 164 2012
30
Secureframesecureframe.com

Automated compliance platform designed by experts to revolutionize risk and compliance management for businesses

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 128 2020
31
Borneo (Acquired by Atlassian)borneo.io

Real-time data security and privacy platform for hyper-growth businesses, enabling risk identification, remediation, and compliance across data infrastructure, SaaS, and APIs

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 109 2019
32
Check Point AI Securitylakera.ai

Lakera secures AI applications for enterprises by mitigating cyber risks, working with Fortune 500 companies, startups, and model providers while developing AI security solutions

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 102 2021
33
Skybox Securityskyboxsecurity.com

Visualizes and analyzes hybrid and multi-cloud networks, providing full context and understanding of the attack surface to reduce cyber exposure.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 99 2002
34
Stytchstytch.com

Stytch provides a powerful identity platform for developers with advanced features like device fingerprinting and secure authentication for secure access management

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 73 2020
35
Traceable by Harnesstraceable.ai

Provides industry-leading API security. Achieves API visibility and attack protection in a cloud-first, API-driven world. Minimizes risk, maximizes value.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 62 n/a
36
Escapeescape.tech

Automates the full offensive security lifecycle, discovering and validating modern application, API, and infrastructure exposures from code to cloud.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 61 2020
37
Thycoticdelinea.com

Provider of privileged access management solutions securing data, devices, code, and cloud infrastructure for risk reduction and compliance.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 60 1996
38
Darwiniumdarwinium.com

Darwinium provides a digital security and fraud prevention platform on the perimeter edge, protecting customer interactions from fraud and online abuse

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 48 n/a
39
Didit (YC W26)didit.me

The company offers an App using NFC, blockchain, and AI technologies for secure identity verification and digital payments, enhancing user experience and data security

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 34 2023
40
Brighterion, a Mastercard Companymastercard.com

A leading provider of real-time artificial intelligence technology for fraud prevention in financial transactions, credit risk management, and healthcare fraud detection

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 33 n/a
41
elbaelba.security

Providing a comprehensive security solution for teams in their daily work routine, ensuring ultimate protection and peace of mind

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 29 n/a
42
Vectrixcloudflare.com

Vectrix offers easy-to-use SaaS security scanning for organizations to identify and address security risks across various applications in real-time

Software Development ๐Ÿ‡บ๐Ÿ‡ธ San Francisco 11 2020

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

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