CISO Tribune

Vendor comparison · 2 companies

Pluto Security vs WitnessAI

Pluto Security sells security for what people build with AI. WitnessAI sells an AI security and governance platform that brings humans and agents under one platform. CISO Tribune files both under 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.

Change the companies

Up to four companies side by side.

  • Pluto Security
  • WitnessAI
Pluto Security vs WitnessAI: Products, Customers and Funding Compared
Pluto SecurityPluto Security sells security for what people build with AI.pluto.securityWitnessAIWitnessAI sells an AI security and governance platform that brings humans and agents under one platform.witness.ai
What it sells
  • 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.
  • Observe[6][11]Finds and catalogs AI applications, agents and MCP servers, and visualizes AI conversations and agentic activity.
  • Control[1][5][6][7][10][11]Governs what AI agents and employees can do, routes prompts to models based on risk or purpose, and generates audit trails.
  • Protect[1][5][6][8][11]Applies runtime security controls and content guardrails intended to block prompt injection and jailbreak attempts and filter harmful responses.
Categories
Headquarters
Not stated on its pagesMountain View, United States[4]
Founded
Not stated on its pages2023[3]
Ownership and funding
Privately heldPrivately held[2][13]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • 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]
Not stated on its pages
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
  • G2: listed, seen November 10, 2026[13]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
From 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.From its own pages, the company sells mainly to enterprises, saying they need security and governance that extends from humans to agents. It addresses employee use of AI, citing risks around sensitive data, compliance, and shadow AI. It also addresses AI agents, which it describes as connecting to tools, accessing data, and taking actions on behalf of employees.
Last verified
October 16, 2026November 2, 2026

Where they overlap

  • Workforce AI usage security is the primary category of both Pluto Security and WitnessAI.
  • Both are privately held.

Where they differ, field by field

  • Pluto Security is also filed under AI model and agent security and Software supply chain security. WitnessAI is also filed under AI firewalls and guardrails and AI governance.
  • Pluto Security lists Explorer, Risk radar, Space Shield and Marketspace. WitnessAI lists Observe, Control and Protect.
  • WitnessAI is headquartered in Mountain View, United States.
  • WitnessAI was founded in 2023.

How they differ

CISO Tribune files both Pluto Security and WitnessAI under Workforce AI usage security as the primary category. Pluto Security sells Explorer, Risk radar, Space Shield and Marketspace, which map AI tools and agents, triage them against a risk database, enforce context-based policies and offer a catalog of vetted AI add-ons. WitnessAI sells Observe, Control and Protect, which catalog AI applications, agents and MCP servers, govern what agents and employees can do, and apply runtime controls and content guardrails.

Pluto Security describes its focus as security for what people build with AI, across AI builders, developer tools and business workspaces. WitnessAI describes an AI security and governance platform that brings humans and agents under one platform. WitnessAI also lists automated red teaming for AI models before production deployment and analytics on AI usage risks. WitnessAI is headquartered in Mountain View, United States, and was founded in 2023. Both companies are privately held. Pluto Security states total funding of $42 million.

Pluto Security names a Fortune 500 health insurance company among the kinds of customers quoted, and it announced on October 13, 2026 that it has over 40 enterprise customers. Pluto Security also launched Plutonium, a free, vendor-neutral security hub covering the AI assistant ecosystem, on June 17, 2026. WitnessAI announced WitnessAI 2.0, which includes AI activity controls mapped to PCI DSS 4.0.1. WitnessAI also announced that it completed its SOC 2 Type II audit and is named among the founding members of the ServiceNow Control Tower Alliance.

Questions about Pluto Security and WitnessAI

What do Pluto Security and WitnessAI sell?
Pluto Security sells Explorer, Risk radar, Space Shield and Marketspace. WitnessAI sells Observe, Control and Protect.
Are Pluto Security and WitnessAI in the same category?
Yes. Workforce AI usage security is the primary category of both on CISO Tribune.
Where are Pluto Security and WitnessAI headquartered?
WitnessAI is headquartered in Mountain View, United States.
When were Pluto Security and WitnessAI founded?
WitnessAI was founded in 2023.
Who owns Pluto Security and WitnessAI?
Pluto Security is privately held. WitnessAI is privately held.
Who are Pluto Security and WitnessAI 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. From its own pages, the company sells mainly to enterprises, saying they need security and governance that extends from humans to agents.
What have Pluto Security and WitnessAI announced recently?
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 Pluto Security

Pluto Security sells security for what people build with AI. Pluto Security says it protects modern creation workflows, across AI builders, developer tools, and business workspaces, with visibility, risk understanding, and real-time guardrails.

Pluto Security describes the problem as one that security teams face when AI tools let everyone build fast. Its about page says security teams were forced to either block everything or accept the risk, and that Pluto offers a third way: let people build, while security stays in control. Its homepage says new tools, skills, plugins and extensions, combined with intent-based actions that execute in runtime, lead CISOs to either block or approve in bulk.[3]

The homepage names four problem areas.

Pluto Security says it protects every layer of the AI atmosphere: tools, supply chain, artifacts and runtime. Its homepage describes four connected capabilities: uncovering an organization's AI universe with wide context, triaging every discovery with Pluto's self-research risk database, enforcement through intent-based policies that adapt in real time, and a place for every safe, verified AI add-on that is curated by default.[1][3]

The homepage gives examples of use cases by team. Finance runs scripts with Cursor and approval is required for payment API access. For AI builders connecting MCP servers, trusted MCPs are allowed and the rest are quarantined. HR builds with Lovable while employee and company data is protected, and Sales uses AI agents for prospecting while unauthorized outbound actions are prevented.[3]

Pluto Security states that it offers visibility and risk understanding for AI-driven building activity, allowing security teams to monitor real-time guardrails across AI workflows and integrations.[4]

On company facts, Pluto says it is officially out of stealth, with $42 million in total funding. Pluto Security was founded by a team from Unit 8200, Microsoft, and Palo Alto Networks. Its about page says it is part of accelerators including AWS, CrowdStrike and NVIDIA.[1][3][5]

Pluto Security on the record

Sources

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

WitnessAI full record

  1. [1]Unified AI Security and Governance Platform | WitnessAIWitnessAI · undated page, accessed September 27, 2026 · Tier A
  2. [2]Witnessai raises 58 million for global expansion and announces new ways to secure ai agents 302659319WitnessAI via PR Newswire · prnewswire.com · published January 13, 2026 · Tier A
  3. [3]Witnessai launches with guardrails for aiDark Reading · darkreading.com · published May 21, 2024 · Tier B
  4. [4]WitnessaiAppSec Santa · appsecsanta.com · published April 3, 2026 · Tier C
  5. [5]Scaling AI Security with WitnessAI - WitnessAIWitnessAI · undated page, accessed November 10, 2026 · Tier A
  6. [6]AI Security Platform | Enterprise AI Governance | WitnessAIWitnessAI · undated page, accessed November 10, 2026 · Tier A
  7. [7]WitnessAI 2.0 Delivers New Regulatory Compliance Capabilities to Support Safe AI Adoption - WitnessAIWitnessAI · published April 30, 2025 · Tier A
  8. [8]Ensuring Compliance with the EU AI Act - WitnessAIWitnessAI · undated page, accessed November 10, 2026 · Tier A
  9. [9]WitnessAI Achieves SOC 2 Type II Compliance - WitnessAIWitnessAI · published October 21, 2025 · Tier A
  10. [10]WitnessAI Joins ServiceNow Control Tower Alliance - WitnessAIWitnessAI · undated page, accessed November 10, 2026 · Tier A
  11. [11]TENEX.AI and WitnessAI Partner to Deliver Managed Security and Compliance Services for Enterprise AI - WitnessAIWitnessAI · published June 17, 2025 · Tier A
  12. [12]How Security Leaders Prove ROI and Reduce Risk - WitnessAIWitnessAI · undated page, accessed November 10, 2026 · Tier A
  13. [13]WitnessAI Reviews 2026: Details, Pricing, & FeaturesG2 · undated page, accessed November 10, 2026 · Tier C

Spot a factual error? Request a correction.