Abnormal Security
AI-native email security built on behavioral AI.
About
Abnormal Security is an AI-native human behavior security platform that stops socially engineered attacks across email and cloud collaboration apps. Its anomaly detection engine builds baselines of normal human behavior to catch business email compromise, account takeover, and AI-generated phishing that signature-based gateways miss.
The company closed a $250 million Series D at a $5.1 billion valuation and surpassed $200 million in ARR, positioning it as the fastest-growing vendor in the AI-native email security segment. It was named a Leader in the first Gartner Magic Quadrant for Email Security Platforms and holds FedRAMP In Process status for U.S. federal adoption.
What it can do
- Behavioral AI detection of BEC and phishing
- Account takeover protection for cloud office
- API-based deployment with no mail routing changes
- Autonomous remediation of malicious messages
- FedRAMP In Process compliance posture
Setup
Connect Microsoft 365 or Google Workspace via API; the platform deploys without MX record changes and begins baselining behavior immediately.
Prerequisites
Admin access to the organization's email tenant and cloud collaboration apps.
Use cases
Works with
Trust score — 8/10
Scored 8/10 (verified tier, metrics-v1). Evidence: Verified via vendor site/docs/GitHub and reputable coverage, wave 119; Trending score 84/100 from researcher assessment.
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.