AI-Native Sensitive Data Protection and DLP

Harmonic Security was founded in 2023 and headquartered in San Francisco. The company provides AI-focused data protection and governance solutions aimed at securing enterprise adoption of generative AI. The platform monitors and identifies AI services used across an organization, detecting both sanctioned and unsanctioned (shadow AI) tools and alerting on potential privacy or security risks.

The company’s policy engine automates enforcement of data handling rules based on user permissions, data sensitivity, and application context. Harmonic Security also offers a virtual analyst capability that guides employees on safe AI usage while providing security teams with real-time threat detection, digital forensics, and incident response workflows.

Harmonic Security has raised more than $26 million in total funding, including a $17.5 million Series A in October 2024 backed by Next47, Claroty, Sysdig, and Ten Eleven Ventures, and a $7 million seed round in October 2023. In-Q-Tel also made an undisclosed investment that was announced in May 2024.

Harmonic Security was recognized as a Gartner Cool Vendor in October 2024, reflecting growing industry attention on AI-related data protection. Its product emphasizes privacy compliance, ensuring customer data is not used to train internal models, and provides mechanisms for GDPR and US regulatory adherence. Overall, Harmonic targets organizations adopting generative AI that require visibility and control over data flows without exposing sensitive information to external AI systems.