0.security alternatives
TL;DR: 12 companies doing similar work to 0.security in B2B, ranked by how closely they match what 0.security actually does — not just by category.
How this list was built: every company here is Y Combinator-backed and shares at least one category with 0.security. They are scored on how closely their own description overlaps with 0.security's, and all facts shown come from the YC company records — nothing is estimated.
What are the best alternatives to 0.security?
| Alternative | What it does | Batch | Team | Status |
|---|---|---|---|---|
| Palisade | AI that finds and fixes OS-level vulnerabilities across device fleets | Summer 2026 | 1 | Active |
| Hiro | Agents that handle security work | Summer 2023 | 2 | Active |
| Fithub | — | Winter 2010 | — | Inactive |
| Insoshi | — | Winter 2008 | — | Inactive |
| PromptArmor | LLM Security and Compliance | Winter 2024 | — | Active |
| Trident | Autonomous offensive security agents. The best defense is offense | Summer 2026 | 4 | Active |
| idemeum | AI-powered Application Control | Summer 2021 | 10 | Active |
| Unbound | Use AI tools without fear of data leakage | Summer 2024 | 7 | Active |
| Dyneti Technologies | Reduce payment fraud | Winter 2019 | 3 | Active |
| Observa | Catch accidental database exposures before the bad guys | Winter 2021 | 1 | Inactive |
| ZeroPath | Automatically find and fix your software vulnerabilities | Summer 2024 | 10 | Active |
| Sublime Black | Automating Cyber Security Incident Response Through Artificial… | Winter 2019 | — | Inactive |
Is 0.security still active?
0.security is still operating, so switching is a choice rather than a forced migration. Compare on fit and price rather than urgency.
How was this list put together?
Every company here is Y Combinator-backed and shares at least one category with 0.security. They are then ranked on how closely their own description overlaps with 0.security's, so the closest matches come first rather than whoever happens to share a tag.