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San Francisco Cybersecurity 28 startups

"Cybersecurity" Startups in San Francisco

Every active San Francisco startup we index that carries the "Cybersecurity" tag.

All startups in San Francisco → "Cybersecurity" startups nationwide →

Last updated

2026-09-02

Hiring right now 4% 1 of 28

Open roles 110

City San Francisco

Our index currently lists 28 tech startups in San Francisco tagged "Cybersecurity" — a city×tag slice of the live directory, not every "Cybersecurity" company nationwide and not every San Francisco startup regardless of tag. 4% of this slice is hiring right now (1 of 28). Apply links on each profile go to the company's own site; we don't act as a middleman. "Cybersecurity" startups in San Francisco include TRM Labs, Agentic Fabriq, Antigen, Archon, and Candor. Categories represented here: AI / ML, Security, and Dev Tools. YC batches in this slice: S26, F25, W25, and W24, among others. Widen the view anytime: all San Francisco startups at /startups/location/san-francisco, or every "Cybersecurity" company nationwide at /startups/tag/cybersecurity.

TRM is building a safer world for billions of people.

FintechMachine LearningGovTech

The control plane for AI agents.

Artificial IntelligenceB2BIdentity

Continuous offensive security for the enterprise.

CybersecurityAI

We help software companies sell to government.

GovTechComplianceCybersecurity

Protect your data and stop insider risk

Artificial IntelligenceCybersecurity

Autonomous offensive and defensive security platform

Visibility and Controls for Browser Agents

CybersecurityAI

Corgea finds, and fixes insecure code and packages autonomously.

Developer ToolsSaaSSecurity

AI Agents for Security Operations Teams

SaaSComplianceSecurity

Cyberfend delivers robust, real-time web and mobile security by…

CybersecurityFraud Prevention

The world's frontier hacker for AI agents.

Artificial IntelligenceReinforcement LearningCybersecurity

Take control of your data in real-time.

Fuzzing as a Service

SecurityCybersecurity

The sensitive data redaction layer for AI

Artificial IntelligenceB2BCompliance

Firmware cybersecurity

DevSecOpsHardwareGovTech

Nebula Security

Autonomous AI defense system for cyber attack

B2BSecurityCybersecurity

AI that finds and fixes OS-level vulnerabilities across device fleets

SaaSB2BCybersecurity

LLM Security and Compliance

Generative AISecurityCybersecurity

Autonomous Runtime Security

Developer ToolsSaaSB2B

Trust Center platform that scales customer security reviews

SaaSProductivityCybersecurity

Security for agents that self-improves

Developer ToolsSecurityCybersecurity

Automate your cyber security risk assessments

SecurityCybersecurity

Securing AI native apps directly on devices

Artificial IntelligenceSaaSSecurity

Autonomous offensive security agents. The best defense is offense

Artificial IntelligenceSecurityCybersecurity

Use AI tools without fear of data leakage

Artificial IntelligencePrivacyCybersecurity

AI Agents for Fraud Review and Investigations

Artificial IntelligenceComplianceCybersecurity

Continuous AI pentesting that finds and fixes vulnerabilities

SecurityCybersecurityAI

Automatically find and fix your software vulnerabilities

Artificial IntelligenceDeveloper ToolsB2B

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1 of 4 similar companies is hiring right now · most common: Engineering

We help companies win government funding with AI

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All startups in San FranciscoEvery tag "Cybersecurity" startups nationwideEvery city "Artificial Intelligence" startups in San Francisco606 startups "AI" startups in San Francisco572 startups "B2B" startups in San Francisco520 startups "SaaS" startups in San Francisco428 startups "Developer Tools" startups in San Francisco307 startups "Fintech" startups in San Francisco180 startups "Generative AI" startups in San Francisco137 startups "Consumer" startups in San Francisco120 startups

Frequently asked questions

How many "Cybersecurity" startups are in San Francisco?

Our index currently tracks 28 active tech startups in San Francisco tagged "Cybersecurity". Counts move as scrapers discover new companies and flag shutdowns inactive.

Which "Cybersecurity" startups are based in San Francisco?

Companies on this page include TRM Labs, Agentic Fabriq, and Antigen, plus 25 more below. Each profile links to the company's site and any open roles we scrape.

How is this different from the San Francisco startups page or the "Cybersecurity" tag page?

/startups/location/san-francisco lists every indexed startup in San Francisco across tags. /startups/tag/cybersecurity lists every "Cybersecurity" startup nationwide. This page is the intersection — only companies that resolve to both San Francisco and "Cybersecurity".

Are these San Francisco "Cybersecurity" startups hiring?

1 of the 28 companies on this page currently have open roles in our jobs index.

How often is this list updated?

Automated scrapers refresh on the same daily cadence as the rest of the directory. The last index update was 2026-09-02.