What they do:
Encrypted AI with verifiable privacy
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HQ: San Francisco, CA, United States
Top Cybersecurity Startups in the United States
This list has 177 startups and was last updated on Oct 15, 2026. 47 of them are hiring right now. Biggest hubs: San Francisco (125), New York (24), and Seattle (4). Largest teams: Vanta, TRM Labs, and Teleport. Latest round: Fraud Protection Network raised $1M (Oct 8, 2026).
177 startupsPage 3 of 5
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:
Zero-Knowledge security without seed phrases or backup codes
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HQ: Denver, CO, 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:
AI infrastructure for biosecurity
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HQ: New York, NY, 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:
Protect, monitor and defend your Internet presence
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HQ: New York, NY, 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:
Cloud Native SIEM (alternative to Splunk/Elastic)
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HQ: Seattle, WA, United States
What they do:
Agents that handle security work
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HQ: New York, NY, 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:
Privileged Access Management for AI Agents
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HQ: New York, NY, 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
What they do:
The control plane for AI agents.
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HQ: San Francisco, CA, United States
What they do:
Real time intelligence for law enforcement & security teams.
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HQ: San Francisco, CA, United States
What they do:
Security for agents that self-improves
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HQ: San Francisco, CA, United States
What they do:
Your personal context, securely portable across every AI app.
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HQ: San Francisco, CA, United States
What they do:
CrowdStrike for AI Agents
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HQ: San Francisco, CA, United States
What they do:
The world's frontier hacker of AI agents.
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HQ: San Francisco, CA, United States
What they do:
Training company-specific models that approve AI actions.
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HQ: San Francisco, CA, United States
What they do:
AI Claims Investigator for Insurance
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HQ: New York, NY, United States
What they do:
Agentic AI Security and Governance
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HQ: San Francisco, CA, United States
What they do:
Infrastructure Cartography
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HQ: Boston, MA, United States