Pillar Security

What the company sells

Pillar Security sells one platform to discover, test, secure and govern every AI agent across an organization. Pillar catalogs AI agents, models, prompts, frameworks, tools, MCP servers, skills and coding agents through agentless integrations. The catalog covers shadow AI and unapproved systems deployed without oversight. Pillar maps instructions, data sources, tool permissions, and external connections for each agent. Pillar traces dependencies across models and agent harness and scans agent configs, permissions, and identities.

For discovery, Pillar works through agentless integrations with source code repos, data platforms, and endpoints. Pillar assesses risks in AI stacks from vulnerabilities in models, frameworks, and dependencies. Pillar flags violations when unsanctioned AI appears in an environment. Pillar policy rules enforce approved models, frameworks, and data sovereignty standards across an AI stack. Pillar generates audit reports for GDPR, SOC 2, EU AI Act, and ISO 42001.

For testing, Pillar executes multi-turn adversarial attacks against complete AI systems to test tool orchestration, permission escalation, and agentic workflows. Pillar maps an AI attack surface as a graph showing relationships between agents, tools, permissions, and data sources. RedGraph maps how tools, prompts, and data combine to create exploitable surfaces specific to an environment. Pillar tests AI platforms, third-party agents, and production systems that a customer does not own or control through multi-step black box adversarial attacks against prompts, tools, and workflows. Pillar documents exploitability with attack transcripts, recordings and reproduction steps, and feeds validated findings into adaptive guardrails.

For runtime protection, Pillar analyzes user and agent intent to detect malicious behavior before it impacts production. Pillar identifies PII, PHI, secrets, and credentials flowing through AI interactions in real time. Pillar applies configurable policies to mask, block, or log sensitive data before exposure to AI models or external systems. Pillar guardrails calibrate using red teaming findings from specific applications to tune protection against the manipulation patterns detected during testing. Pillar logs prompts, responses, tool invocations, and results with timestamps. Pillar streams telemetry to security platforms for centralized monitoring.

For developer machines, Pillar deploys through an MDM and inventories the AI coding agents across a fleet: which agents run where, their versions, sandbox state and risk. Pillar runs full configuration scans for Claude Code, Cursor, Codex CLI, Gemini CLI, OpenCode and Pi Coding Agent, and detects other agents such as Amazon Q, Antigravity, Codeium and OpenClaw by fingerprint. Runtime Guardian sits in the agent's own pre-tool hook for Claude Code, Codex CLI and Cursor, and decides on every action before it runs. Pillar inventories local and remote servers across a fleet and scores each against a catalog of 23,000+ pre-analyzed servers. Pillar rolls out through Jamf Pro, Kandji, JumpCloud or any MDM that runs scripts, on macOS, Linux and Windows. On endpoints, Pillar analyzes permissions, credentials, access scopes, and auto-run settings, then provides step-by-step remediation. At runtime, Pillar monitors every prompt, tool call, and command to detect prompt injection, tool poisoning, and data exfiltration.

For governance, Pillar translates governance policies into technical controls that enforce approved models, licensing standards, and data sovereignty requirements at every stage. Pillar extends governance controls to external AI providers, SaaS platforms, and vendor integrations. Pillar maps governance findings, testing results, and runtime logs to regulatory requirements automatically. Pillar adds a security enforcement layer on AI gateway frameworks without re-architecting a stack. Pillar inspects every prompt and response in real time for sensitive data exposure, prompt injection, toxic content, and policy violations. For tool integrations, Pillar validates at runtime that tool calls match their declared schemas and flags anomalous behavior, like a tool accessing resources outside its expected scope.

Pillar can be deployed in its managed cloud, in a customer's own cloud account or data center, or as a mix of both. Self-hosted deployments include runtime guardrails, AI discovery, red teaming and agentic endpoint security. Adaptive guardrails are available in the managed cloud only today. Telemetry back to Pillar is off unless the customer enables it. A Fortune 300 manufacturer runs Pillar fully self-hosted. Pillar cites SOC 2 Type II and ISO/IEC 27001:2022.^{[1][2][3][4][5][6][7][8][9][10]}

Categories

• AI model and agent security (primary category)
• AI governance
• AI firewalls and guardrails
• Workforce AI usage security
• Compare Pillar Security with companies in the same categoryside by side

Headquarters

Not established from our sources

Founded

Not established from our sources

Ownership

Owned by Vanta

CISO on record

Not yet on our record. Send a verified source

Website

pillar.security

Products and services

Product names as the company writes them; what each does, in our words, from the company's own product pages. Never how well it does it.

• Agentic Endpoint^[7][10]

  Protects the AI agents that run on employee machines.

  Pillar deploys through an MDM and inventories the AI coding agents across a fleet: which agents run where, their versions, sandbox state and risk. Runtime Guardian sits in the agent's own pre-tool hook for Claude Code, Codex CLI and Cursor, and decides on every action before it runs. Pillar inventories local and remote servers across a fleet and scores each against a catalog of 23,000+ pre-analyzed servers.

Competitors and alternatives

The other companies on our record filed under the same categories, category by category: first those that lead with that category and share more of Pillar Security's categories, then alphabetical. A list from the record, never a ranking.

• On ai model and agent security, Pillar Security competes with AIShield, Asymptote Labs, Enkrypt AI, Fiddler AI, Neo, Noma Security, Onyx Security, SplxAI, Straiker, Alice and 54 more.

• On ai governance, Pillar Security competes with Singulr, Cranium, Credo AI, Holistic AI, Transcend, AIShield, Asymptote Labs, Enkrypt AI, Fiddler AI, Harmonic Security and 25 more.

• On ai firewalls and guardrails, Pillar Security competes with Lakera, Lasso Security, Prompt Security, Impart Security, Operant AI, AIShield, Enkrypt AI, Fiddler AI, Noma Security, SplxAI and 9 more.

• On workforce ai usage security, Pillar Security competes with Harmonic Security, WitnessAI, Aurascape, Pluto Security, Asymptote Labs, Lakera, Lasso Security, Neo, Onyx Security, Prompt Security and 17 more.

Recent news

Dated company events from the last twelve months, each in one sentence of ours with its source. Newest first.

• November 9, 2026

  Vanta signed a definitive agreement to acquire Pillar Security, an AI security platform that protects AI agents across their lifecycle. Business Wire^[11]

References

Every fact above cites one of these by number. Tier A is the company itself, a regulator or a filing; tier B is trade or business press.

1. [1]pillar.securityPillar Security · pillar.security · undated page, accessed November 10, 2026 · Tier A: the company, a regulator or a filing
2. [2]Pillar Security | Securing the Agentic WorkforcePillar Security · undated page, accessed November 11, 2026 · Tier A: the company, a regulator or a filing
3. [3]Pillar Security Platform | Securing the Entire AI Software LifecyclePillar Security · undated page, accessed November 11, 2026 · Tier A: the company, a regulator or a filing
4. [4]AI Discovery & Posture | Pillar SecurityPillar Security · undated page, accessed November 11, 2026 · Tier A: the company, a regulator or a filing
5. [5]AI Red Teaming & Risk Detection | Pillar SecurityPillar Security · undated page, accessed November 11, 2026 · Tier A: the company, a regulator or a filing
6. [6]AI Runtime Guardrails | Pillar SecurityPillar Security · undated page, accessed November 11, 2026 · Tier A: the company, a regulator or a filing
7. [7]Agentic Endpoint: Secure AI Coding Agents | Pillar SecurityPillar Security · undated page, accessed November 11, 2026 · Tier A: the company, a regulator or a filing
8. [8]AI Security Solutions | Pillar SecurityPillar Security · undated page, accessed November 11, 2026 · Tier A: the company, a regulator or a filing
9. [9]AI Governance & Compliance | Pillar SecurityPillar Security · undated page, accessed November 11, 2026 · Tier A: the company, a regulator or a filing
10. [10]Deployment Options: Cloud, Self-Hosted, Hybrid · PillarPillar Security · undated page, accessed November 11, 2026 · Tier A: the company, a regulator or a filing
11. [11]Vanta to Acquire Pillar Security to Turn AI Policy Into PracticeBusiness Wire · published November 9, 2026 · Tier A: the company, a regulator or a filing

Last verified November 10, 2026. Our code found the quoted passage behind each fact on its source page when the fact was recorded, and re-checks every record against its sources each month.

Recorded November 10, 2026, expanded November 11, 2026 from the references above.

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