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Pillar Security

Agent security platform with agentic red teaming

Automated platformAgents and toolsRuntime guardrailsCompliance mapping

Pillar Security, founded in 2023, sells one platform to discover, test, secure and govern AI agents, including MCP servers and coding agents. Its red teaming runs multi-turn agentic attacks and returns attack transcripts, alongside runtime guardrails and governance reports. Its researchers disclosed the “Rules File Backdoor” in GitHub Copilot and Cursor and a remote code execution bug in MCP’s official debugging tool.

Best for: Teams shipping agents and MCP tools that want testing and runtime controls in one place.

$9M seed (Apr 2025)

  • ✓ Maps to OWASP
  • ✓ Maps to MITRE ATLAS
  • ✓ Maps to the EU AI Act
  • ✓ SOC 2 or ISO 27001
Visit Pillar Security

Facts checked November 9, 2026 against the sources listed below. Pillar Security does not pay to appear here.

1 Legal namePillar Security
2 HeadquartersTel Aviv, Israel / Miami, USA
3 Founded2023
4 TeamNot disclosed
5 What they testLLM apps, Agents and tool use, MCP servers, Prompt injection and jailbreaks, Data leakage, Model supply chain
6 FrameworksMITRE ATLAS, EU AI Act, OWASP (list not specified), NIST (framework not specified), SAIL (Pillar’s own framework)
7 CertificationsSOC 2 Type II, ISO 27001 (self-stated)
8 Published pricesNot disclosed
9 Customers and partnersCISO testimonials from Similarweb, Eleos Health and AvidXchange, plus one from Tavily.

Where we recommend them

Worth knowing before you sign

  • Seed-stage: a Series A was reported in preparation in Jan 2026, but none had closed in our sources.
  • Names OWASP and NIST on its homepage without saying which lists.
  • Human-led engagements are not described.

Go to Pillar Security's site

Sources

  1. Vendor: homepage
  2. Reworked: $9M seed
  3. Pulse 2.0: seed and founders

Work at Pillar Security? Send corrections with a source to editors@bestairedteamingcompanies.com. We fix verified errors within five business days.

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