Harmonic Security Launches MCP Gateway – Providing Complete Visibility and Control Over an Organization’s Agentic AI Ecosystem

October 15, 2025 at 08:01 AM EDT

Harmonic Security today announces MCP Gateway, a developer-friendly, locally installed gateway that gives security teams complete visibility and control over their organization's agentic AI ecosystem.

The solution transparently intercepts all MCP (Model Context Protocol) traffic enabling security teams to discover what clients and servers are in use, enforce granular policies to block risky actions, and apply Harmonic's industry-leading sensitive data models to prevent the exfiltration of critical intellectual property and other sensitive information.

Without visibility or controls, sensitive data can move between AI tools and company systems unchecked. MCP is designed to boost transparency and consistency of this data via an open standard that defines how AI models (like LLMs) can securely interact with external systems, tools, and data sources. With a common ‘language’ and framework for connecting an AI model to applications, APIs, and company data, MCP will boost consistency and security across the industry, enabling the AI eco system to flourish.

Bryan Woolgar-O’Neil, CTO and co-founder at Harmonic Security, comments: “The rise of agentic AI is creating a new, invisible attack surface within the enterprise. The risks are far greater than simple data leakage; security leaders are now facing sophisticated threats like workflow hijacking via prompt injection, credential theft from rogue servers, and tool poisoning.

Woolgar-O’Neil continues: “MCP is a much-needed open standard which will boost adoption of agentic AI across the industry, but security teams lack the governance they expect over this new workflow channel. Harmonic MCP Gateway fixes that via a lightweight, developer-friendly gateway that gives security teams visibility into MCP usage and the ability to set real controls, blocking risky clients or data flows before something slips through. It enables security teams to move from reactive alerting to proactive prevention.”

Michael Janielis, Senior Principal, Information Security Architect at Advisor360, a Harmonic customer concludes: “Every security leader I know is trying to get ahead of AI-driven workflows. It’s exciting to see Harmonic tackling this head-on, so teams can be confident to innovate safely."

About Harmonic

Harmonic Security lets your teams adopt AI tools safely by protecting sensitive data in real time with minimal effort. It gives you full control and stops leaks so your teams can innovate confidently.

For more information, visit https://www.harmonic.security/