Pillar Security
Inventory, agentic red team, and self-improving runtime guardrails for the agent lifecycle.
Proof of life. Named a 2026 Gartner Cool Vendor in AI Software Security
About Pillar Security
Pillar fingerprints agents, models, MCP servers, and skills, including the shadow ones. Multi-turn red teaming proves tool-orchestration and permission-escalation paths, then those transcripts calibrate runtime guardrails instead of sitting in a PDF.
The same platform covers homegrown apps, coding agents, and AI gateways so AppSec is not running three vendors for one agent.
Investors
Shield CapitalGolden VenturesGround Up Ventures
Work at Pillar Security? Link to this listing
Optional badge for your site or README. It changes nothing about the listing, its order or its review. Other formats and a dark version: press kit.
<a href="https://securitystartups.com/companies/pillar-security"><img src="https://securitystartups.com/badge/listed.svg" alt="Listed on Security Startups" width="184" height="44"></a>