Adaptive Security, a New York-based AI social engineering prevention company, has raised a total of $55 million through a follow-on investment from the OpenAI Startup Fund.
Investors
The OpenAI Startup Fund is a venture capital initiative established by OpenAI to invest in early-stage startups that leverage artificial intelligence. The fund’s primary goal is to empower companies leveraging AI to create a positive and transformative impact on the world.
Adaptive Security Use of Funds
The company will use the new capital to accelerate product development and scale its AI-native defenses against phishing, impersonation, and deepfake attacks.
About Adaptive Security
Founded by Brian Long and Andrew Jones, Adaptive Security provides AI-powered social engineering prevention solutions, specializing in protection against deepfake persona attacks, AI-driven phishing, and multi-channel social engineering threats. By combining advanced AI simulations, real-time risk assessment, and security training, Adaptive empowers organizations to proactively defend against emerging cyber threats.
Funding Details
Company: Adaptive Security, Inc.
Raised: $55.0M
Round: Series A Follow-on Investment
Funding Date: September 2025
Lead Investor: OpenAI Startup Fund
Additional Investors:
Company Website: https://adaptivesecurity.ai/
Software Category: Cybersecurity / AI Security
Source: https://www.prnewswire.com/news-releases/openai-fund-extends-investment-in-adaptive-security-raising-total-to-55-million-in-series-a-302549706.html
