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September 12, 2025 - Deals
Adaptive Security Secures $55 Million Series A Investment From OpenAI Startup Fund
Adaptive Security, a New York-based AI social engineering prevention company led by CEO Brian Long, secured an additional investment from the OpenAI Startup Fund, bringing its Series A round to $55 million. The funding will support scaling operations and advancing its platform, which uses AI simulations, personalized training, and real-time risk assessment to defend organizations against deepfake persona attacks, AI-driven phishing, and other multi-channel social engineering threats.
INVESTOR: OpenAI Startup Fund
ROUND: Series A
AMOUNT: $55,000,000
HQ: #NewYork #NY #NewYorkCity #NYC
#VentureCapital #BrianLong #AdaptiveSecurity #OpenAIStartupFund #TradedVC