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OpenAI Fund extends investment in adaptive security, raising total to $55 million in Series A
ByAinvest
Tuesday, Sep 9, 2025 9:16 am ET1min read
OpenAI Fund extends investment in adaptive security, raising total to $55 million in Series A
The OpenAI Fund has extended its investment in Adaptive Security, a cybersecurity startup, raising the total funding to $55 million in Series A. The investment was led by OpenAI and a16z, with OpenAI taking a significant stake in the company. This funding round follows Adaptive's previous $43 million raise in April 2025, led by a16z and the OpenAI Fund .Adaptive Security is on a mission to stop AI-powered cyberattacks, founded by Brian Long and Andrew Jones, proven entrepreneurs behind successful ventures like Attentive and TapCommerce. The company's platform combines personalized security training, AI-driven attack simulations, and automated threat triage, all powered by the Adaptive Risk Intelligence Engine. This unique approach aims to quantify human risk at the individual level and protect teams from emerging threats like deepfakes, smishing, and voice scams .
The latest funding round underscores the growing importance of AI in cybersecurity and the increasing demand for innovative solutions. OpenAI's involvement signals a strategic move to expand its influence in the cybersecurity sector, leveraging its expertise in AI to bolster Adaptive's capabilities. The $55 million investment will likely be used to further develop and scale the company's platform, expand its team, and enhance its product offerings .
The cybersecurity market is projected to reach $200 billion by 2025, and Adaptive's focus on AI-driven solutions positions it well to capture a significant share of this market. The company's ability to attract high-profile investors like OpenAI and a16z indicates strong confidence in its technology and growth potential .
In summary, the extended investment by the OpenAI Fund in Adaptive Security reflects the growing importance of AI in cybersecurity and the increasing demand for innovative solutions. Adaptive's unique approach to AI-driven threat protection positions it well to capitalize on the growing market for cybersecurity services.
References:
https://www.linkedin.com/jobs/view/software-engineer-at-adaptive-security-4295230421
https://africa.businessinsider.com/news/europes-answer-to-openai-just-got-a-dollar15-billion-boost-from-chip-giant-asml/j1rehfb
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