Abnormal - Cloud Email Security

Abnormal AI is a cloud-based behavioral security platform designed to protect organizations from advanced email attacks, identity threats, AI tool misuse, and insider risks. The platform leverages a proprietary behavioral AI engine called Attune AI, which builds bespoke baselines of normal user and entity behavior to detect anomalies that indicate malicious activity. By analyzing thousands of behavioral signals in real time, Abnormal can identify and autonomously respond to novel attacks—such as business email compromise (BEC), sophisticated phishing, account takeover, and AI-generated social engineering—that traditional security tools often miss. The platform is cloud-native and API-based, requiring no agents or MX changes for deployment, and is trusted by over 25% of the Fortune 500.

The Abnormal Behavioral Security Platform encompasses several integrated modules: Email Security (stopping BEC, phishing, and account takeover), Identity Security (hardening identities and detecting compromise), AI Security (visibility and policy enforcement for AI tools and agents), and Insider Threat (blocking fraudulent actors and malicious insiders). The platform claims to detect 46 times more attacks with 60 times fewer false positives compared to leading large language models, and operates at machine speed—21 times faster than some alternatives. Abnormal is designed for security teams seeking automated, AI-driven defense against the increasing speed, scale, and sophistication of AI-powered cyberattacks.