Evan Reiser

Evan Reiser is a serial entrepreneur and recognized expert in applied machine learning with a strong background in behavioral profiling. He holds a Bachelor of Science in Computer Systems Engineering from Rensselaer Polytechnic Institute. Before co-founding Abnormal Security, Reiser led product management and machine learning teams for Twitter's advertising business. He also founded several earlier companies, including Bloomspot, which was acquired by JPMorgan Chase, and AdStack, a digital advertising software company. His early career included R&D work in machine learning at Eastman Kodak.

Evan Reiser is an American technology entrepreneur, computer systems engineer, and cybersecurity executive who co-founded Abnormal Security in 2018 and serves as its CEO. Reiser graduated from Washington University in St. Louis with a degree in computer science. Prior to founding Abnormal, Reiser co-founded BloomSpot (acquired by Chase) and served as Head of Product at TellApart, an ad-tech machine learning platform acquired by Twitter for $532 million. At Twitter, Reiser led the machine learning and product teams responsible for commercial monetization, processing billions of real-time behavioral signals daily. At Abnormal, Reiser has spearheaded company strategy, enterprise customer acquisition, and technological innovation, scaling Abnormal into a $5.1 billion market leader protecting over 15% of the Fortune 500.