Harmonic Security

Prevents employees from leaking sensitive data into generative AI tools.

Harmonic Security addresses data loss through GenAI usage. It watches what employees paste and upload into AI tools, identifies sensitive material using purpose-built language models rather than pattern matching, and blocks or coaches in the moment. Security teams use it to allow AI adoption without losing control of confidential data.

Category

Data Security & DLP

Founded

2023

Funding

$24M raised (Series A, 2024)

Website

https://www.harmonic.security

Seen at Black Hat USA 2026 (AI Zone sponsor, booth 5209).

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