Abnormal Security

Abnormal Security, operating as Abnormal AI, is an email and identity security company founded in 2018 and headquartered in San Francisco, United States. It was created to stop phishing, business email compromise, and account takeover attacks that bypass traditional secure email gateways.

The platform ingests signals from email, identity, and collaboration tools such as Slack and Teams, then applies a proprietary behavioral AI model to establish a baseline of normal communication and flag deviations indicating an attack. Additional modules cover account takeover detection, AI-driven phishing awareness training, and data loss prevention, and the company reports its platform is used by more than a quarter of the Fortune 500.

1. Behavioral AI Detection: Builds a baseline of normal email and identity behavior to flag anomalies.

2. Business Email Compromise Protection: Detects impersonation and payment fraud attempts in inbound email.

3. Account Takeover Detection: Identifies signs of compromised mailboxes based on login and behavior signals.

4. AI Security Mailbox: Autonomously triages and remediates reported suspicious emails.

5. Messaging Security: Extends behavioral detection to Slack and Microsoft Teams.

6. Phishing Awareness Training: Delivers automated, AI-generated security awareness content to employees.