# Harmonic Security

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/harmonic-security

- Industry: IT Security/Cybersecurity
- Headquarters: San Francisco, US
- Website: www.harmonic.security
- Total disclosed funding: $74M
- Latest round: Series B (Oct 14, 2026)
- Investors on record: 8

## About

Based in California, US, and founded in 2023, Harmonic Security, Inc. is a developer of a security platform that monitors the AI usage of enterprises. Alastair Paterson (CEO) and Bryan Woolgar-O'Neil (CTO) are the co-founders of the company. In October 2024, Harmonic Security, Inc. raised USD 17.5 million in series A funding led by new investor Next47, with participation from returning investor Ten Eleven Ventures.

The company provides a platform that encompasses AI security solutions, including AI visibility, risk control, workflow automation, and data protection. The firm's platform discovers all shadow AI, understands AI adoption, and identifies risks.

The company plans to use the October 2024 funding to expand its business and market operations.

## Funding rounds

- Series B, Oct 14, 2026, $50M — Crosspoint Capital Partners, N47, StepStone Group, Ten Eleven Ventures
- Series A, Sep 11, 2024, $17M — N47, Ten Eleven, Sysdig, Inc., Claroty Ltd.
- Seed, Sep 8, 2023, $6.4M — Storm Ventures, Ten Eleven

## Investors

- Storm Ventures (https://capitalatlas.ai/funds/storm-ventures) — Seed
- Ten Eleven — Seed, Series A
- N47 (https://capitalatlas.ai/funds/n47) — Series A, Series B
- Sysdig, Inc. — Series A
- Claroty Ltd. — Series A
- Crosspoint Capital Partners (https://capitalatlas.ai/funds/crosspoint-capital-partners) — Series B
- StepStone Group — Series B
- Ten Eleven Ventures (https://capitalatlas.ai/funds/ten-eleven-ventures) — Series B