OpenAI Fund Boosts Adaptive Security's Series A to $55 Million

September 10, 2025
Adaptive Security has received a follow-on investment from the OpenAI Startup Fund, increasing its Series A funding to $55 million, as announced in a press release.

Adaptive Security has received a follow-on investment from the OpenAI Startup Fund, increasing its Series A funding to $55 million, announced in a press release. This marks the OpenAI Startup Fund's continued support for Adaptive Security, which remains its sole investment in the cybersecurity sector.

Adaptive Security specializes in AI-powered social engineering prevention, focusing on threats such as deepfake persona attacks and AI-driven phishing. The company's platform offers AI-powered phishing simulations, personalized security awareness training, and real-time triage to enhance organizational resilience against AI-enabled fraud.

The investment underscores the growing importance of human-centered protection in cybersecurity, as AI threats become increasingly sophisticated and personal. With OpenAI's backing, Adaptive Security aims to further develop its solutions to address these evolving challenges.

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