Harmonic Security raises $50M Series B to grow AI governance platform
Harmonic Security Inc. announced a $50 million Series B round to expand its platform that inspects employee interactions with AI tools before they reach the target system. The startup’s small‑language‑model engine reviews each message in context and returns a verdict in milliseconds, aiming to catch credential leaks and other risky behavior. The funding, led by Crosspoint Capital Partners LP,…
Key points
- $50M Series B led by Crosspoint Capital Partners LP
- Platform uses small language models to inspect AI interactions in milliseconds
- Over 100 enterprise customers, covering millions of employees
Harmonic’s platform now integrates with enterprise tools such as Cisco’s Agent Builder and Anthropic’s Claude Compliance API, and it serves more than 100 customers, covering millions of employees. The company’s co‑founder and CEO Alastair Paterson said the new capital gives it “real momentum” to accelerate development as the AI market evolves.
Harmonic Security, which uses small language models to inspect employee interactions with AI tools, raised a $50M Series B, taking its total funding to $76M
siliconangle.com · 14 October 2026
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