Harmonic Security raises $50M Series B for AI tool monitoring

Harmonic Security, a startup focused on workplace AI security, announced a $50 million Series B funding round. The company uses small language models to monitor and inspect how employees interact with AI tools, addressing a growing concern for enterprises deploying AI internally.

The funding brings the startup's total capital raised to $76 million. The round reflects investor confidence in the emerging category of AI safety and compliance tools designed to help organizations govern employee use of generative AI systems.