Harmonic Security Raises $50M Series B Led by Crosspoint to Govern Enterprise AI Tool Use

Harmonic Security raised a $50M Series B led by Crosspoint Capital, bringing total funding to $76M. Its platform runs custom small language models to inspect employee interactions with AI tools in browsers, desktop apps and agentic workflows, flagging exposed credentials in milliseconds. The company says it now protects 100+ enterprises and integrates with Cisco Agent Builder via MCP and Anthropic's Claude Compliance API.