LunaSec alternatives
TL;DR: 12 companies doing similar work to LunaSec in B2B, ranked by how closely they match what LunaSec 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 LunaSec. They are scored on how closely their own description overlaps with LunaSec's, and all facts shown come from the YC company records — nothing is estimated.
What are the best alternatives to LunaSec?
| Alternative | What it does | Batch | Team | Status |
|---|---|---|---|---|
| Fithub | — | Winter 2010 | — | Inactive |
| Insoshi | — | Winter 2008 | — | Inactive |
| PromptArmor | LLM Security and Compliance | Winter 2024 | — | Active |
| Dyneti Technologies | Reduce payment fraud | Winter 2019 | 3 | Active |
| Hiro | Agents that handle security work | Summer 2023 | 2 | Active |
| Palisade | AI that finds and fixes OS-level vulnerabilities across device fleets | Summer 2026 | 1 | Active |
| Sphere Secure Workspace | — | Summer 2015 | 2 | Acquired |
| Appcanary | Appcanary tracks the dependencies you use in your apps and servers… | Summer 2015 | 2 | Acquired |
| Aedilic | Open-Source AI-generated image/deepfake detection | Winter 2024 | 2 | Inactive |
| Patchwork Security | Security patch notifications for servers. Build it, deploy it, and… | Winter 2016 | 2 | Inactive |
| Observa | Catch accidental database exposures before the bad guys | Winter 2021 | 1 | Inactive |
| Tracecat | Open-source agentic security automation platform | Winter 2024 | — | Active |
Is LunaSec still active?
LunaSec is no longer listed as active, so anyone still relying on it should plan a migration to one of the alternatives above.
How was this list put together?
Every company here is Y Combinator-backed and shares at least one category with LunaSec. They are then ranked on how closely their own description overlaps with LunaSec's, so the closest matches come first rather than whoever happens to share a tag.