Abnormal AI
Behavioral email protection against fraud, phishing and account compromise in cloud environments
Overview
Abnormal AI (formerly Abnormal Security) is an AI-powered email security platform based on behavioral analysis. It analyzes normal communication patterns for each user and organization to detect attacks that bypass traditional filters: spear phishing, CEO fraud (BEC), supplier compromise (VEC) and account takeover. In 2026, VEC represents 61% of all BEC attacks detected by the platform.
Recognized at CNBC Disruptor 50 2026, Abnormal AI protects over 4,500 organizations, including 25% of Fortune 500. It connects directly via API to cloud email environments (M365, Google Workspace) without MX proxy, simplifying deployment. Its autonomous AI agents also automate SOC workflows related to email incidents.
Our verdict
Abnormal AI is the reference for organizations suffering sophisticated email attacks that native Microsoft/Google tools don't block. It shines particularly against BEC and supplier fraud. Entry ticket (~$25,000/year minimum) reserves it for sizeable SMBs or mid-market companies. For small structures, native M365 Defender protections or a solution like Proofpoint Essentials suffice.