Harmonic Security

What is Harmonic Security?

Harmonic Security is an AI governance and control platform that shows how employees and AI agents use AI tools across an organization. It classifies activity by business purpose and applies real-time controls, rather than relying on keyword-based DLP rules.

Key capabilities of Harmonic Security

• AI discovery: Identifies AI tools in use, including shadow AI on personal devices and AI embedded in apps
• Contextual classification: Categorizes tasks by business use case and meaning of the interaction
• Inline controls: Blocks risky actions, warns employees with explanations and logs events for review
• Agent security: Governs agentic workflows at the Model Context Protocol (MCP) layer
• Privacy defaults: HR, Finance and Ops leaders are excluded from reporting by default, with name masking available
• EU hosting: Data hosting in the EU is available on request

How Harmonic Security works

Harmonic follows a collect, categorize, control sequence. It gathers AI activity at the source through browser extensions, desktop agents and MCP gateways, classifies each task by business context, then applies governance actions in real time. Rollout uses Intune, Jamf, Kandji or Group Policy, and the vendor says no proxy redesign or certificate infrastructure is needed.

Who uses Harmonic Security?

Security and governance teams in technology, legal, insurance, healthcare and financial services use Harmonic to find unsanctioned AI and prevent sensitive data from entering it.

Harmonic Security pricing

Harmonic does not publish plan prices on its main page and describes tiered offerings. Products are Explore (discovery), Guide (real-time control) and Command (human and agent governance).

Harmonic Security alternatives

Alternatives include Noma Security and Zenity, which also secure AI agents, and Knostic, which focuses on knowledge access controls for LLMs. Harmonic positions itself against SASE tools and Microsoft Purview by covering local applications and multiple AI vendors.