What they do:
CrowdStrike for AI Agents
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HQ: San Francisco, CA, United States
Top Cybersecurity Startups
This list has 228 startups and was last updated on Oct 15, 2026. 57 of them are hiring right now. Biggest hubs: San Francisco (125), New York (24), and Tel Aviv (6). Largest teams: Vanta, Veriff, and TRM Labs. Latest round: Harmonic Security raised $50M (Oct 14, 2026).
Survival statistics →173 open roles →
228 startupsPage 5 of 7
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:
Verify that the expected person is in control before key actions.
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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
What they do:
The Authorization Layer for AI Agents
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HQ: San Francisco, CA, United States
What they do:
AI that finds and fixes OS-level vulnerabilities across device fleets
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HQ: San Francisco, CA, United States
What they do:
Catch wrong LLM answers before your customers do
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HQ: San Francisco, CA, United States
What they do:
Always-on AI security engineer
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HQ: San Francisco, CA, United States
What they do:
We make Privacy Software for SMBs.
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HQ: San Francisco, CA, United States
What they do:
Detect Gunshots | Inform Law Enforcement | Empower First Responders
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HQ: New York, NY, United States
YC W16Early stage
What they do:
Open-source agentic security automation platform
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HQ: New York, NY, United States
YC W24Early stage
Sqreen
Acquired
What they do:
Sqreen is the application security platform for the modern enterprise
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HQ: San Francisco, CA, United States
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HQ: Palo Alto, CA, United States
Funding:
$14.8M · Equity · Mar 2026
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HQ: Sunnyvale, CA, United States
Incorporated: 2021
Funding:
$7.5M · Equity · Feb 2026
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HQ: Wilmington, DE, United States
Funding:
$5.97M · Equity · Apr 2026
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HQ: Palo Alto, CA, United States
Incorporated: 2022
Funding:
$5.23M · Debt · Jan 2026
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HQ: Indianapolis, IN, United States
Incorporated: 2024
Funding:
$4.5M · Equity · Mar 2026
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HQ: Scottsdale, AZ, United States
Funding:
$3M · Equity · Oct 2026
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HQ: Sacramento, CA, United States
Incorporated: 2022
Funding:
$2.55M · SAFE · Apr 2026
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HQ: Aventura, FL, United States
Funding:
$1M · Debt · Oct 2026
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HQ: Erie, CO, United States
Incorporated: 2023
Funding:
$1M · Equity · Apr 2026
Proxy
Acquired
What they do:
Smart ring digital wallet
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HQ: San Francisco, CA, United States
Cognito
Acquired
What they do:
Frictionless, modern identity verification that starts with just a…
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HQ: San Francisco, CA, United States
Authy
Acquired
What they do:
Authy is a Two-Factor Authentication platform for developers
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HQ: San Francisco, CA, United States
SafeBase
Acquired
What they do:
Trust Center platform that scales customer security reviews
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HQ: San Francisco, CA, United States
Optery
Acquired
What they do:
Opt out software that removes your private info from the internet
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HQ: San Francisco, CA, United States
AeroFS
Acquired
What they do:
Secure Enterprise Collaboration.
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HQ: San Francisco, CA, United States
Berbix
Acquired
What they do:
Convert more verified users. Instantly & accurately validate user IDs.
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HQ: San Francisco, CA, United States
Doppler
Acquired
What they do:
Secure secrets. Prevent breaches. Keep teams moving.
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HQ: Austin, TX, United States
Clickfacts
Acquired
What they do:
ClickFacts is a Malware Software Solutions company for buyers and sellers of online media. Its automated plug and play malware discovery solution tests online…
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HQ: San Francisco, CA, United States
Kuna Systems
Acquired
What they do:
We're making a smart, front door camera with intercom that lets you…
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HQ: San Francisco, CA, United States
Final
Acquired
What they do:
A credit card that drastically reduces payment fraud and gives…
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HQ: San Francisco, CA, United States
Smyte
Acquired
What they do:
Smyte stops bad actors on social networks and marketplaces.
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HQ: San Francisco, CA, United States