CISO Tribune

Vendor comparison · 2 companies

Pillar Security vs Pluto Security

Pillar Security sells one platform to discover, test, secure and govern every AI agent across an organization. Pluto Security sells security for what people build with AI. CISO Tribune files both under AI model and agent security and Workforce AI usage security. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

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Up to four companies side by side.

  • Pillar Security
  • Pluto Security
Pillar Security vs Pluto Security: Products, Customers and Funding Compared
Pillar SecurityPillar Security sells one platform to discover, test, secure and govern every AI agent across an organization.pillar.securityPluto SecurityPluto Security sells security for what people build with AI.pluto.security
What it sells
  • Agentic Endpoint[7][10]Protects the AI agents that run on employee machines.
  • Explorer[1]Discovers and maps the AI tools, agents and extensions in use across an organization's endpoints, cloud and SaaS.
  • Risk radar[1]Evaluates discovered AI tools and agents against a risk database to triage them.
  • Space Shield[1]Applies and enforces policies that control what AI tools and agents are permitted to do based on context.
  • Marketspace[1]Offers a curated catalog of vetted AI add-ons that employees can adopt.
Categories
Headquarters
Not stated on its pagesNot stated on its pages
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Owned by VantaPrivately held
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • November 9, 2026Vanta signed a definitive agreement to acquire Pillar Security, an AI security platform that protects AI agents across their lifecycle.[11]
  • October 13, 2026Pluto Security announced its emergence from stealth with $42 million in total funding and said it has over 40 enterprise customers.[7]
  • June 17, 2026Pluto Security launched Plutonium, a free, vendor-neutral security hub covering the AI assistant ecosystem.[6]
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
Who it fits
Not written yetFrom its own pages, Pluto Security sells mainly to security teams and CISOs who want to let employees use AI tools without blocking them. It names a Fortune 500 health insurance company among the kinds of customers quoted. Its about page describes protecting AI builders, developer tools, and business workspaces.
Last verified
November 10, 2026October 16, 2026

Where they overlap

  • Pillar Security and Pluto Security are both filed under AI model and agent security and Workforce AI usage security.

Where they differ, field by field

  • Pillar Security's primary category is AI model and agent security; Pluto Security's is Workforce AI usage security.
  • Pillar Security is also filed under AI governance and AI firewalls and guardrails. Pluto Security is also filed under Software supply chain security.
  • Pillar Security lists Agentic Endpoint. Pluto Security lists Explorer, Risk radar, Space Shield and Marketspace.
  • Pillar Security is owned by Vanta. Pluto Security is privately held.

What it sells: Pillar Security

What Agentic Endpoint does[7][10]
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.

Questions about Pillar Security and Pluto Security

What do Pillar Security and Pluto Security sell?
Pillar Security sells Agentic Endpoint. Pluto Security sells Explorer, Risk radar, Space Shield and Marketspace.
Are Pillar Security and Pluto Security in the same category?
They share AI model and agent security and Workforce AI usage security. Pillar Security's primary category is AI model and agent security and Pluto Security's is Workforce AI usage security.
Who owns Pillar Security and Pluto Security?
Pillar Security is owned by Vanta. Pluto Security is privately held.
Who are Pillar Security and Pluto Security sold to?
From its own pages, Pluto Security sells mainly to security teams and CISOs who want to let employees use AI tools without blocking them.
What have Pillar Security and Pluto Security announced recently?
November 9, 2026: Vanta signed a definitive agreement to acquire Pillar Security, an AI security platform that protects AI agents across their lifecycle. October 13, 2026: Pluto Security announced its emergence from stealth with $42 million in total funding and said it has over 40 enterprise customers.

About Pillar Security

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.[1][2][3][4]

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.[4]

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.[2][3][5]

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.[6]

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.[7][8]

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.[8][9]

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][6][7][8][10]

Pillar Security on the record

Sources

Pillar Security full record

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

Pluto Security full record

  1. [1]pluto.securityPluto Security · pluto.security · undated page, accessed October 16, 2026 · Tier A
  2. [2]About Us - Pluto SecurityPluto Security · undated page, accessed November 3, 2026 · Tier A
  3. [3]Enabling CISOs to say YES - Pluto SecurityPluto Security · undated page, accessed November 3, 2026 · Tier A
  4. [4]What Is AI Security Posture Management & What Does It Do? - Pluto SecurityPluto Security · undated page, accessed November 3, 2026 · Tier A
  5. [5]Webinar - Still saying no to AI tools because of security risks? - Pluto SecurityPluto Security · undated page, accessed November 3, 2026 · Tier A
  6. [6]Introducing PlutoniumPluto Security · published June 17, 2026 · Tier A
  7. [7]Pluto Security Emerges From Stealth With $42M in Funding to Help Enterprises Secure AI AdoptionFinanceWire (Markets Insider) · published October 13, 2026 · Tier B

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