Shiboleth
Hiring
What they do:
Shiboleth automates lending compliance for financial institutions…
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HQ: San Francisco, CA, United States
Top Cybersecurity Startups in California
This list has 132 startups and was last updated on Oct 15, 2026. 35 of them are hiring right now. Biggest hubs: San Francisco (125), Los Angeles (2), and Palo Alto (2). Largest teams: Vanta, TRM Labs, and Teleport. Latest round: Autonomous Cyber raised $2.55M (Apr 21, 2026).
132 startupsPage 2 of 4
Socratix AI
Hiring
What they do:
AI coworkers for fraud and compliance teams.
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HQ: San Francisco, CA, United States
Antigen
Hiring
What they do:
Continuous offensive security for the enterprise.
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HQ: San Francisco, CA, United States
What they do:
Apozy makes every website safe to browse
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HQ: San Francisco, CA, United States
Hyperbrowser
Hiring
What they do:
Web infra for AI agents
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HQ: San Francisco, CA, United States
Metalware
Hiring
What they do:
Firmware cybersecurity
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HQ: San Francisco, CA, United States
SubImage
Hiring
What they do:
The Open-Core Security Graph
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HQ: San Francisco, CA, United States
Dyneti Technologies
Hiring
What they do:
Reduce payment fraud
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HQ: San Francisco, CA, United States
What they do:
Cloud and Container Security Platform
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HQ: San Francisco, CA, United States
Candor
Hiring
What they do:
Protect your data and stop insider risk
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HQ: San Francisco, CA, United States
Archon
Hiring
What they do:
We help software companies sell to government.
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HQ: San Francisco, CA, United States
What they do:
We help you get compliant while you focus on your business.
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HQ: San Francisco, CA, United States
What they do:
Zero-trust authentication, authorization, and auditing for AI agents
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HQ: San Francisco, CA, United States
Sift
Hiring
What they do:
The Leader in Digital Trust & Safety
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HQ: San Francisco, CA, United States
What they do:
Information Security (Cyber Security), Compliance and Privacy (GDPR &…
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HQ: San Francisco, CA, United States
PromptArmor
Hiring
What they do:
LLM Security and Compliance
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HQ: San Francisco, CA, United States
YC W24Early stage
What they do:
Encrypted AI with verifiable privacy
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HQ: San Francisco, CA, United States
What they do:
A live watermark inside AI voice that survives phone calls
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HQ: San Francisco, CA, United States
What they do:
Frontier AI to stop fraud, abuse, and financial crimes.
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HQ: San Francisco, CA, United States
What they do:
The authentication framework for TypeScript
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HQ: San Francisco, CA, United States
What they do:
Autonomous offensive security agents. The best defense is offense
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HQ: San Francisco, CA, United States
What they do:
Autonomous AI defense system for cyber attack
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HQ: San Francisco, CA, United States
What they do:
Least cost routing system to reduce 70%+ token spend
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HQ: San Francisco, CA, United States
What they do:
Easiest way to set up Zero Trust Access for your team
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HQ: San Francisco, CA, United States
What they do:
Detect every data leak into third-party GenAI tools
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HQ: San Francisco, CA, United States
What they do:
Risotto auto-solves IT support requests using AI
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HQ: San Francisco, CA, United States
What they do:
Continuous AI pentesting that finds and fixes vulnerabilities
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HQ: San Francisco, CA, United States
What they do:
AI for Corporate Security Cameras
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HQ: San Francisco, CA, United States
What they do:
Frontier AI Defenses for Social Engineering Attacks
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HQ: San Francisco, CA, United States
What they do:
Internal industrial company data for frontier labs
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HQ: San Francisco, CA, United States
What they do:
See and control what your agents actually do
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HQ: San Francisco, CA, United States
What they do:
Security for AI-native developers
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HQ: San Francisco, CA, United States
What they do:
ai-native security engineering for mission critical codebases
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HQ: San Francisco, CA, United States
What they do:
Visibility and Controls for Browser Agents
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HQ: San Francisco, CA, United States
What they do:
The sensitive data redaction layer for AI
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HQ: San Francisco, CA, United States
What they do:
AI Agents for Platform Engineering
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HQ: San Francisco, CA, United States