Harmonic Security has raised $50 million in a Series B funding round to accelerate its development. The round was led by Crosspoint Capital Partners, with participation from existing investors. This additional capital brings the company's total raised funds to $76 million.
The company, based in San Francisco and London, UK, develops software to ensure security when implementing artificial intelligence in large enterprises. Its platform allows organizations to track how employees use AI tools, identify potential data risks, and apply real-time controls.
The company's main goal is to protect business operations while minimizing restrictions for employees. These funds follow previous investment rounds aimed at Harmonic's growth. Previously, in October 2024, the company secured $17.5 million in a Series A round led by Next47.
Harmonic helps organizations safely implement AI without sacrificing confidential information. As employees increasingly use AI-based assistants, desktop programs, and autonomous agents to perform work tasks, there is a risk of sensitive information and corporate credentials being compromised.
The company's platform logs AI interactions and classifies tasks based on their context. Custom-developed small language models analyze these interactions in fractions of a second, separating genuine technical work from potentially dangerous activities.
Furthermore, Harmonic offers Usage Intelligence tools. These assistance managers help understand exactly how AI is being used and where efficiency gains can be achieved. Businesses can explore new use cases and make more informed investment decisions.
Crosspoint Capital Partners led this funding round amid the expansion of the enterprise AI security market. Managing Director Zach Sivertson stated that 'there is no reason why companies should have to choose between technological innovation and security.' He emphasized that Harmonic provides 'the best of both worlds—ensuring transparency in AI usage while allowing employees to remain productive.'
Paterson explained that enterprise leaders are asking two main questions: 'Is AI compromising us?' and 'Are we getting a return on investment?' Harmonic aims to answer both these questions through its monitoring and analysis tools.
The company claims its technology is used by millions of employees across more than 100 organizations. Among the firm's clients are major global corporations and several giant enterprises. Harmonic has also expanded its list of distribution partners, adding Climb and Distology.
The company's workforce has more than doubled: from approximately 30 people in October 2024 to over 90 today. The team operates in both the US and the UK. The new funding will also help accelerate engineering, sales, and marketing activities in both markets.
Harmonic faces significant competition from existing cybersecurity players who are already enhancing their AI offerings. SentinelOne acquired Prompt Security, and Cato Networks announced the acquisition of Aim Security. Furthermore, demand is growing for solutions that secure companies using generative and agentic AI.
The demand for AI in enterprise adoption is stimulating the market. Gartner predicted that global spending on security software would reach $15.6 billion in 2025, growing to $37.6 billion by 2030 as corporate security needs expand.
Harmonic distinguishes itself with its contextual analysis of employee interactions with AI. The company's platform is designed to detect both risks and value. This balance may allow organizations to move away from the narrow approach to AI dictated by security requirements.



