CISO Tribune

Vendor comparison · 2 companies

Harmonic Security vs Zenity

Harmonic Security sells AI Governance and Control (AIGC), a control layer that secures and enables the AI-First workforce. Zenity sells an AI agent security platform built to govern how agents behave, not just what they say or generate. CISO Tribune files both under AI model and agent security and AI governance. 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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  • Harmonic Security
  • Zenity
Harmonic Security vs Zenity: Products, Customers and Funding Compared
Harmonic SecurityHarmonic Security sells AI Governance and Control (AIGC), a control layer that secures and enables the AI-First workforce.harmonic.securityZenityZenity sells an AI agent security platform built to govern how agents behave, not just what they say or generate.zenity.io
What it sells
  • Harmonic Command[3]Gives security teams visibility into how employees and agents use AI, plus controls for using the tools safely.
  • MCP Gateway[2][3][4][6]A local gateway that extends Harmonic coverage to MCP activity.
  • Harmonic Endpoint Agent[6]Identifies native AI apps, IDEs, CLI tools, locally hosted models and inference API calls on employee devices.
  • Harmonic Usage Intelligence[8]Groups prompts, files, responses, and supported agent actions into tasks and use cases.
  • AI Observability[5]Builds a live inventory of every agent across an organization's environment and tracks the data those agents access.
  • AI Security Posture Management (AISPM)[7]Evaluates configuration, permissions, and integrations before an agent goes live.
  • Boundaries[4][6][8]Evaluates every agent action in real time against an organization's rules and decides to let it through, block it, or shut the agent down.
  • AI Detection and Response (AIDR)[9]AIDR reads the full sequence of an agent's activity, detecting threats mapped to the OWASP LLM and MITRE ATLAS frameworks.
  • Zenity Security Assessment Hub[13]A set of 10 free, open-source tools built by Zenity Labs to help security teams identify and understand immediate risks.
Categories
Headquarters
Not stated on its pagesNot stated on its pages
Founded
Not stated on its pages2021[2]
Ownership and funding
Privately heldPrivately held[3][6][17]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • September 23, 2026Zenity was named a Market Shaper in Gartner's inaugural Emerging Market Quadrant for AI Application Security.[15]
  • August 3, 2026Zenity announced a $125 million Series C round led by Norwest.[14]
  • June 17, 2026Zenity and Carahsoft announced a partnership under which Carahsoft serves as Zenity's Public Sector distributor.[17]
  • March 17, 2026Zenity announced general availability of runtime security controls for AI agents built on Microsoft Foundry.[16]
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 yetZenity describes a global financial services firm and a global asset manager as organizations that write policy rules for agents. Zenity covers agents embedded in SaaS tools, home-grown agentic platforms in the cloud, and end-user devices. Zenity gives security and platform teams a single place to surface, enforce, and protect MCP usage.
Last verified
November 3, 2026November 9, 2026

Where they overlap

  • Harmonic Security and Zenity are both filed under AI model and agent security and AI governance.
  • Both are privately held.

Where they differ, field by field

  • Harmonic Security's primary category is Workforce AI usage security; Zenity's is AI model and agent security.
  • Harmonic Security is also filed under Data loss prevention.
  • Harmonic Security lists Harmonic Command, MCP Gateway, Harmonic Endpoint Agent and Harmonic Usage Intelligence. Zenity lists AI Observability, AI Security Posture Management (AISPM), Boundaries, AI Detection and Response (AIDR) and Zenity Security Assessment Hub.
  • Zenity was founded in 2021.

What it sells: Harmonic Security

What Harmonic Command does[3]
Harmonic Command covers workforce AI use across supported browsers, desktop applications, command-line tools, AI APIs, and agentic workflows that use MCP. Harmonic Command intercepts the action and guides the user or agent toward a safer path.
What MCP Gateway does[2][3][4][6]
Supported OpenTelemetry sources and the local MCP Gateway extend Harmonic coverage to additional native, command-line, and MCP activity. The Harmonic MCP Gateway pairs with the Endpoint Agent and applies to agentic workflows. The MCP Gateway runs on Windows, macOS, and Linux.
What Harmonic Endpoint Agent does[6]
The Harmonic Endpoint Agent detects Claude Desktop, Claude Code, Claude Cowork and OpenAI Codex on macOS and Windows. The Endpoint Agent identifies locally hosted models such as Ollama on employee devices and ties that activity to the process and user behind it. Harmonic identifies connections to inference endpoints like OpenAI, Anthropic, Bedrock and Azure AI Foundry.

What it sells: Zenity

What AI Observability does[5]
AI Observability is Zenity's discovery and visibility layer for AI agents. Data Lens surfaces sensitive files and pages that are both frequently accessed and broadly exposed across agents.
What AI Security Posture Management (AISPM) does[7]
AISPM evaluates configuration and permissions for agents embedded in platforms like Microsoft Copilot Studio, ChatGPT Enterprise, and Salesforce Agentforce. AISPM applies stricter enforcement in production and more flexible policy in development or sandbox environments.
What Boundaries does[4][6][8]
Boundaries is Zenity's runtime enforcement engine. A rule written once in Boundaries is enforced on Copilot, ChatGPT Enterprise, Agentforce, Bedrock, coding agents, and homegrown builds. Boundaries includes a built-in AI assistant that turns a plain-language request into a working rule.
What AI Detection and Response (AIDR) does[9]
AI Detection and Response (AIDR) is Zenity's runtime security layer for AI agents. AIDR detects direct and indirect prompt injection and blocks execution before the agent acts on them. AIDR breaks every agent interaction into individual steps and groups them by thread in a single activity table.
What Zenity Security Assessment Hub does[13]
The Zenity Security Assessment Hub is built by Zenity Labs. The tools take a Red-Team approach to visualize threats across Microsoft 365, with a focus on 365 Copilot, Copilot Studio, and Power Platform.

Questions about Harmonic Security and Zenity

What do Harmonic Security and Zenity sell?
Harmonic Security sells Harmonic Command, MCP Gateway, Harmonic Endpoint Agent and Harmonic Usage Intelligence. Zenity sells AI Observability, AI Security Posture Management (AISPM), Boundaries, AI Detection and Response (AIDR) and Zenity Security Assessment Hub.
Are Harmonic Security and Zenity in the same category?
They share AI model and agent security and AI governance. Harmonic Security's primary category is Workforce AI usage security and Zenity's is AI model and agent security.
When were Harmonic Security and Zenity founded?
Zenity was founded in 2021.
Who owns Harmonic Security and Zenity?
Harmonic Security is privately held. Zenity is privately held.
Who are Harmonic Security and Zenity sold to?
Zenity describes a global financial services firm and a global asset manager as organizations that write policy rules for agents.
What have Harmonic Security and Zenity announced recently?
September 23, 2026: Zenity was named a Market Shaper in Gartner's inaugural Emerging Market Quadrant for AI Application Security.

About Harmonic Security

Harmonic Security sells AI Governance and Control (AIGC), a control layer that secures and enables the AI-First workforce. Harmonic Security describes a platform that classifies every AI task, discovers why it is used, and controls it in real time. Harmonic Command covers workforce AI use across supported browsers, desktop applications, command-line tools, AI APIs, and agentic workflows that use MCP. Harmonic Command coverage includes ChatGPT, Claude, Copilot, Gemini, Cursor, and more than 1,000 web AI tools.[1][2][3]

Harmonic Command gives security teams visibility into how employees and agents use AI, plus controls for using the tools safely. Supported OpenTelemetry sources and the local MCP Gateway extend Harmonic coverage to additional native, command-line, and MCP activity. The Harmonic MCP Gateway pairs with the Endpoint Agent and applies to agentic workflows. The MCP Gateway runs on Windows, macOS, and Linux.[2][3][4][6]

The Harmonic Endpoint Agent identifies every native AI app, AI-first IDE, CLI tool, locally hosted model and direct inference API call running on employee devices. The Harmonic Endpoint Agent detects Claude Desktop, Claude Code, Claude Cowork and OpenAI Codex on macOS and Windows. Harmonic identifies connections to inference endpoints like OpenAI, Anthropic, Bedrock and Azure AI Foundry, and ties each connection back to the process and user that initiated it. The Endpoint Agent identifies locally hosted models such as Ollama on employee devices and ties that activity to the process and user behind it.[6]

Harmonic secures AI use in the browser with real-time visibility and control over how employees use AI tools. Harmonic identifies the specific account type and subscription plan in use. The Harmonic browser extension finds AI features running inside web apps, such as Magic Write in Canva. Harmonic can warn users as they are about to paste sensitive data, ask for a business justification, or steer them from an unsafe free tool to a sanctioned alternative. The Harmonic browser extension supports Chrome, Edge, Firefox and Safari, plus other Chromium browsers including Arc, Brave, Vivaldi, Island and Genspark.[7]

Harmonic Usage Intelligence groups prompts, files, responses, and supported agent actions into coherent tasks and organization-specific use cases, with views by department, employee, application, approval status, and time. Harmonic builds an inventory of the AI apps a workforce uses, who uses them and for what work. Harmonic records which tools are approved, how policy was applied, what was coached or blocked, and where sensitive data was exposed. Harmonic offers configurable retention, role-based access, employee masking and EU or US hosting. Harmonic does not train on customer data.[5][8][9]

Harmonic uses purpose-built small language models that read the whole prompt or file and interpret the nuance of natural language. Harmonic lets customers enforce enterprise accounts where data is ring-fenced, or restrict uploading corporate context into personal accounts. Harmonic can prevent the upload of protected health information and personally identifiable information to non-compliant models. Harmonic Security says it works with health systems, hospitals, payers and life sciences companies. Harmonic Security says it works with insurance carriers, brokers, MGAs and reinsurers. Harmonic can be deployed through Intune, Jamf, Kandji, or Group Policy.[1][2][3][4][5][8][10][11][12][13]

Harmonic Security on the record

Sources

Harmonic Security full record

  1. [1]Harmonic Security | AI Security for the WorkforceHarmonic Security · undated page, accessed November 3, 2026 · Tier A
  2. [2]Harmonic Security Raises $50 Million Series B Enabling Safe AI Adoption for Millions More EmployeesBusiness Wire · businesswire.com · published October 14, 2026 · Tier A
  3. [3]Harmonic Command: AI Governance & Usage Intelligence Platform | Harmonic SecurityHarmonic Security · undated page, accessed November 10, 2026 · Tier A
  4. [4]Harmonic Explore: AI Usage Visibility & Shadow AI Discovery | Harmonic SecurityHarmonic Security · undated page, accessed November 10, 2026 · Tier A
  5. [5]Harmonic Guide: Real-Time AI Policy Enforcement & Inline Controls | Harmonic SecurityHarmonic Security · undated page, accessed November 10, 2026 · Tier A
  6. [6]Endpoint AI Security & ControlHarmonic Security · undated page, accessed November 10, 2026 · Tier A
  7. [7]Browser-Based GenAI SecurityHarmonic Security · undated page, accessed November 10, 2026 · Tier A
  8. [8]AI Usage IntelligenceHarmonic Security · undated page, accessed November 10, 2026 · Tier A
  9. [9]AI Usage Governance: Enterprise AI Policy & ControlHarmonic Security · undated page, accessed November 10, 2026 · Tier A
  10. [10]DLP for Generative AIHarmonic Security · undated page, accessed November 10, 2026 · Tier A
  11. [11]GenAI Compliance for Regulated IndustriesHarmonic Security · undated page, accessed November 10, 2026 · Tier A
  12. [12]AI Security for HealthcareHarmonic Security · undated page, accessed November 10, 2026 · Tier A
  13. [13]AI Security for InsuranceHarmonic Security · undated page, accessed November 10, 2026 · Tier A

Zenity full record

  1. [1]AI Agent Security and Governance | Zenity AI Security PlatformZenity · undated page, accessed September 27, 2026 · Tier A
  2. [2]Zenity announces strategic investment led by m12Zenity · zenity.io · undated page, accessed September 27, 2026 · Tier A
  3. [3]Zenity raises 38m series b funding round to secure agentic aiZenity · zenity.io · published October 29, 2024 · Tier A
  4. [4]AI Agent Security & Governance Platform for the Enterprise | ZenityZenity · undated page, accessed October 30, 2026 · Tier A
  5. [5]AI Observability | Zenity AI Security PlatformZenity · undated page, accessed November 10, 2026 · Tier A
  6. [6]AI Agent Security | Model Context Protocol (MCP) | ZenityZenity · undated page, accessed November 10, 2026 · Tier A
  7. [7]AI Security Posture Management | Zenity AI Security PlatformZenity · undated page, accessed November 10, 2026 · Tier A
  8. [8]Runtime Boundaries | Zenity AI Security PlatformZenity · undated page, accessed November 10, 2026 · Tier A
  9. [9]AI Detection and Response (AIDRZenity · undated page, accessed November 10, 2026 · Tier A
  10. [10]Agentic Identity & Access Management: Zenity AI Security PlatformZenity · undated page, accessed November 10, 2026 · Tier A
  11. [11]Securing Financial Services AI | Zenity, Microsoft & SlalomZenity · undated page, accessed November 10, 2026 · Tier A
  12. [12]Company | Zenity | Secure AI Agents EverywhereZenity · undated page, accessed November 10, 2026 · Tier A
  13. [13]Zenity Security Assessment Hub | Zenity | Secure AI Agents EverywhereZenity · undated page, accessed November 10, 2026 · Tier A
  14. [14]Zenity Raises $125 Million to Secure the Era of 1 Billion AI AgentsZenity · published August 3, 2026 · Tier A
  15. [15]Zenity Named a Market Shaper in Gartner’s Inaugural Emerging Market Quadrant for AI Application SecurityZenity · published September 23, 2026 · Tier A
  16. [16]Zenity Announces Availability of Inline Agent Runtime Security for Agents Built on Microsoft FoundryZenity · published March 17, 2026 · Tier A
  17. [17]Zenity and Carahsoft Bring AI Agent Security and Governance to Federal, State and Local AgenciesZenity · published June 17, 2026 · Tier A

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