Startup profile · funding coverage
Harmonic Security funding, valuation and investors
Workforce AI-security platform that controls how employees and agents use generative-AI tools.
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Funding, valuation & investors
Answer-first snapshotLatest funding
Series B
$50M · October 2026
Latest known valuation
Not publicly disclosed
Total disclosed equity funding
$68M
Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.
Current status
private
series b · London and San Francisco
Investors in latest funding
Lead: Crosspoint Capital Partners
Other: Ten Eleven Ventures , StepStone Group
Overview
Harmonic Security applies data-loss-prevention and usage-governance controls to generative-AI applications, browsers and agentic workflows. Its platform analyzes user intent and data context before information reaches an AI tool.
Why Harmonic Security is interesting
Enterprise AI adoption creates a new control point between employees, agents and external models. Harmonic is betting that contextual policy enforcement can become the security layer for that traffic.
Product & use cases
Discovery, monitoring and real-time policy enforcement for workforce AI use, including browser-based assistants and MCP-enabled agent workflows.
- Prevent sensitive-data leakage into generative-AI tools.
- Govern MCP tool calls and agent actions.
- Discover shadow AI usage across the workforce.
Key facts
- $76M total disclosed funding after the October 2026 Series B.
- Founded by Alastair Paterson and Bryan Woolgar-O'Neil after Digital Shadows.
Funding history (newest first)
Series B
2026-10 $50M- Crosspoint Capital Partners (lead)
- Ten Eleven Ventures (participant)
- StepStone Group (participant)
Source: https://finance.yahoo.com/technology/ai/articles/harmonic-security-raises-50-million-120000341.html
Investors in our directory
Funds linked from Harmonic Security's profile — open a fund page for stage focus and related deal articles.
Competitive landscape
Edge: A purpose-built AI usage-control layer informed by the founders' earlier Digital Shadows experience, designed to classify both content and user intent.
Competes with Prompt Security, LayerX, Cyberhaven and incumbent DLP vendors. Its challenge is proving that an AI-specific control plane remains differentiated as broader security suites add equivalent features.
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Prompt Security direct
AI security and governance for employee use of generative tools.
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Cyberhaven adjacent
Data detection and response with AI usage controls.
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Netskope incumbent
Large enterprise security platform extending DLP into AI applications.
Industries
Market / IPO context
Editorial / static context — not a live quote.
Related funding articles
Venture Capital Tracker pieces that cover Harmonic Security's financing or category context.
FAQs about Harmonic Security
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