WireOver
Shut down
What they do:
Really secure file sending for big files.
Quick facts:
HQ: Boston, MA, United States
Top Security Startups
This list has 156 startups and was last updated on Oct 15, 2026. 41 of them are hiring right now. Biggest hubs: San Francisco (95), New York (20), and Tel Aviv (5). Largest teams: Vanta, TRM Labs, and Authy. Latest round: ZeroPath raised $7.03M (Mar 23, 2026).
156 startupsPage 5 of 5
Patchwork Security
Shut down
What they do:
Security patch notifications for servers. Build it, deploy it, and…
Quick facts:
HQ: San Francisco, CA, United States
Metapacket
Shut down
What they do:
Metapacket is the first selective web gateway that stops malware by…
Quick facts:
HQ: San Francisco, CA, United States
EnvKey
Shut down
What they do:
End-to-end encrypted configuration and secrets management
Quick facts:
HQ: San Francisco, CA, United States
Federacy
Shut down
What they do:
Penetration testing and bug bounty platform.
Quick facts:
HQ: San Francisco, CA, United States
Blyss
Shut down
What they do:
End-to-end encrypted AI.
Quick facts:
HQ: San Francisco, CA, United States
Aedilic
Shut down
What they do:
Open-Source AI-generated image/deepfake detection
Quick facts:
HQ: San Francisco, CA, United States
Traversal Networks
Shut down
What they do:
Enterprise Threat Detection: Tuning, Triage, and Analysis by Experts.
Quick facts:
HQ: San Francisco, CA, United States
Observa
Shut down
What they do:
Catch accidental database exposures before the bad guys
Quick facts:
HQ: Remote
Documents.Me
Shut down
What they do:
Client-side encryption for your devices and the cloud.
Quick facts:
HQ: San Francisco, CA, United States
YC W12Early stage
Rescue Forensics
Shut down
What they do:
Actionable human trafficking intelligence
Quick facts:
HQ: Nashville, TN, United States
YC W15Early stage
Sublime Black
Shut down
What they do:
Automating Cyber Security Incident Response Through Artificial…
Quick facts:
YC W19Early stage