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AI SecurityData Protection

Harmonic Security Platform

Discovers shadow AI and enforces inline GenAI data controls across browser, desktop, and agents.

LLM SecurityAI Usage Control

Harmonic Security Platform Overview

What it does

The Harmonic Security Platform is an AI governance and control layer that lets enterprises adopt generative AI without exposing sensitive data. In place of pattern-matching Data Loss Prevention (DLP) rules, purpose-built small language models classify the intent and data context of every AI interaction in under 200 milliseconds, enforcing policy inline at the browser, desktop, and agent layers where network proxies and Secure Access Service Edge (SASE) tools cannot see AI activity.

How it works

Three modules share one control plane. Harmonic Explore inventories AI usage against a weekly updated catalog of more than 1,000 AI tools, distinguishing personal from corporate accounts and surfacing embedded SaaS AI and shadow AI. Harmonic Guide intervenes inline in browsers and desktop apps such as Claude Desktop and Cursor, nudging users, requiring justification, redirecting to sanctioned tools, or blocking before data leaves the device. Harmonic Command extends governance to agentic workflows through a local Model Context Protocol (MCP) gateway that inventories MCP clients and servers, enforces tool-level policy, and captures audit logs of every interaction.

Credentials and traction

SOC 2 Type II, ISO/IEC 27001:2022, and ISO/IEC 42001:2023 certified. Harmonic Security was named a Top 10 finalist in the RSA Conference 2024 Innovation Sandbox contest and a Representative Vendor in the 2024 Gartner Innovation Guide for Generative AI in Trust, Risk and Security Management. Customers include Advisor360 and Monolithic Power Systems, and the platform targets regulated sectors including technology, legal, insurance, and healthcare, with availability on AWS Marketplace since November 2025.

Key Capabilities

mapped to solution categories
LLM Security

Intercepts prompts and completions to prevent sensitive data (PII, credentials, internal IP), from being transmitted to external LLM services or returned in model responses.

Records prompts, completions, and metadata for all AI interactions with tamper-resistant storage, supporting compliance, forensics, and policy investigation.

Discovers, governs and allowlists the Model Context Protocol servers and tools that AI agents are permitted to invoke.

Secures AI coding assistants and their Model Context Protocol connections against unsafe actions, data exposure and supply-chain risks.

Enforces IAM-style policies on LLM API access, controlling which users and applications can invoke which models and data sources, with audit logging.

AI Usage Control

Discovers and categorizes the organization's use of third-party AI, whether consumed as a service, installed locally, or embedded inside other applications, building a continuously updated inventory of AI usage including shadow AI.

Assesses and scores the risk of discovered AI services and embedded AI features (data handling, training-use terms, hosting, vendor posture) to drive sanction/block decisions.

Defines organizational AI usage policies and enforces them at the point of use - allowing, blocking, redirecting, or constraining specific AI services, models, and features per user, group, or data context.

Inspects prompts, uploads, and AI-generated responses for sensitive data across modalities, preventing exposure of regulated or proprietary information to third-party AI services.

Enforces AI usage controls through multiple local inspection points - browser, endpoint, and network - coordinated from a cloud-delivered control plane, so coverage does not depend on a single interception path.

Compliance

certifications
CCPAGDPRHIPAAISO/IEC 27001:2022ISO/IEC 42001SOC 2 Type II

Integrations

compatible tools
KnowBe4Microsoft Entra IDOpenTelemetryTines

Implementation & support

Deployment model
Browser ExtensionEndpoint AgentSaaS
Pricing structure
Custom / Enterprise

Info last updated on July 26, 2026

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