Abnormal Security

Abnormal Security (now branded as Abnormal AI) is an AI-native human behaviour security platform that protects enterprises from sophisticated email attacks, phishing, social engineering, and account takeovers. Its Behavioral AI models the identity of employees and external senders to detect anomalies across email and connected applications. Trusted by roughly 25% of the Fortune 500, and increasingly by federal and state government agencies, it is a Leader in the 2025 Gartner Magic Quadrant for Email Security Platforms and ranked No. 46 on the 2026 CNBC Disruptor 50 list. The company is extending its behavioural models to monitor the behaviour of agentic AI systems.