Harmonic Security offers a zero-touch data protection product that uses pre-trained, specialized language models trained on realistic sensitive datasets to detect sensitive information in milliseconds. The company launched in October last year and released its data protection product in July 2024. Its product is already in active use by thousands of employees and the company counts enterprise customers in double figures. Harmonic emphasizes reducing false positives and nudging end users toward secure practices rather than relying on complex labeling and noisy rules. It employs 30 people across the United States and the United Kingdom and was named an RSA Innovation Sandbox finalist in 2024. The company plans to use the new funding to scale engineering and go-to-market efforts. Harmonic Security launched to help organizations use generative AI safely without compromising corporate data or IP. Jointly headquartered in London and San Francisco and founded by CEO Alastair Paterson and CTO Bryan Woolgar‑O'Neil, the company offers comprehensive discovery and risk assessment of AI applications used across enterprises. Its platform identifies high‑risk AI services, enables selective blocking and content controls without requiring exact‑match rules, and includes a virtual analyst and automation to reduce load on security teams. Harmonic provides a complete picture of AI adoption so security leaders can enforce policies while permitting productive AI use. The company launched with $7 million in seed funding led by Ten Eleven Ventures, with participation from Storm Ventures and 14 other private investors including Jerry Perullo, Daniel Bernard and Eileen Burbidge. The founders' prior experience at Digital Shadows — acquired in July 2022 for $160 million — underpins the team's cybersecurity pedigree.

Total raised

$25M

Funding rounds

2

Latest round

Series A

Latest activity

Oct 2024