Abnormal AI

Abnormal AI, founded in 2018 by Evan Reiser and Sanjay Jeyakumar, is a leading AI-native cybersecurity company based in San Francisco, California. The company specializes in cloud-native email security and human behavior analysis, utilizing advanced behavioral artificial intelligence to detect and prevent sophisticated cyber threats that traditional security solutions often overlook. Abnormal AI operates on a Software-as-a-Service (SaaS) model and serves over 3,200 organizations globally, including more than 20% of the Fortune 500. The company's flagship product, the Abnormal Behavior Platform, is designed to combat a wide range of email-based threats, such as phishing, business email compromise, and account takeovers. It features real-time threat detection, API-based integration with platforms like Microsoft 365 and Google Workspace, and comprehensive reporting capabilities. Abnormal AI has achieved significant recognition, including being named the #1 company on the Forbes Cloud 100 list in 2024 and maintaining a strong growth trajectory with over $200 million in Annual Recurring Revenue.

Behavioral-AI email and account security (formerly Abnormal Security). ARR passed $200M in August 2024 when it raised at $5.1B; one of the first AI-native security companies past that mark.