Adaptive Security has raised fresh capital as investor appetite for next-generation security tools continues to grow.
The company announced it has secured $81m in a Series B funding round led by Bain Capital Ventures, with participation from NVentures, NVIDIA’s venture capital arm, OpenAI Startup Fund, Andreessen Horowitz, Abstract Ventures, Capital One Ventures and Citi Ventures.
Founded to address the accelerating risks created by generative AI, Adaptive Security develops technology designed to help enterprises identify, test and mitigate human-layer cyber vulnerabilities. Its platform focuses on threats such as deepfake voice calls, video impersonation, text-based scams and sophisticated phishing attacks that increasingly bypass traditional security controls.
The new funding will be used to scale Adaptive’s product development, expand its engineering and research teams, and accelerate go-to-market efforts as demand rises from large enterprises grappling with AI-driven fraud and deception. The company is also investing in advancing its automated threat triage, executive risk scoring and personalised security training capabilities.
Adaptive’s rapid growth reflects heightened concern among both customers and investors about the pace at which AI-enabled attacks are evolving. Less than a year after its public launch in January 2025, the company has grown to more than 500 enterprise customers and reports a net promoter score of 94. Its customer base includes PayPal, Xerox, Bose, the National Hockey League, the Professional Golfers’ Association, Figma, Ramp, Vimeo, TaylorMade Golf and Perplexity.
The company was founded by Brian Long and Andrew Jones, who previously co-founded marketing technology business Attentive. They launched Adaptive after observing that traditional security awareness training was not designed to address the realism and speed of modern AI impersonation attacks.
Adaptive Security CEO and co-founder Brian Long said, “Over the past year, we have watched AI impersonations evolve from experimental to everyday. A few seconds of audio or a short video clip is now enough for anyone to generate a convincing clone. That shift forces organizations to prepare for scenarios where even familiar voices, faces, or messages can no longer be taken at face value.”
Bain Capital Ventures partner Enrique Salem said, “Brian and Andrew have been longtime members of the Bain Capital Ventures portfolio spanning TapCommerce, Attentive and now Adaptive, and we have deep conviction in their ability to build and scale category-defining products. The surge in AI-enabled threat vectors has elevated human-layer security to a board-level priority, and Adaptive is emerging as the platform organizations rely on to stay ahead of these threats. We are proud to support this team as they tackle one of the most important challenges facing businesses and consumers today.”
The Series B marks Adaptive’s third funding announcement this year and brings its total capital raised to $146.5m. In April, the company announced a $43m Series A led by OpenAI Startup Fund and Andreessen Horowitz, followed by a $12m follow-on investment led by OpenAI Startup Fund in September.
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