Case Study: AC Transit achieves rapid protection from account takeovers and phishing and saves 120+ employee hours with Abnormal AI

Moving People and Information Securely with Behavioral AI-Based Cloud Email Security

AC Transit, the Oakland-based regional transit provider serving about 200,000 weekday riders, faced sophisticated email-borne threats—account takeovers, BEC, spear phishing—while needing a solution that was fast and easy to deploy. Head of Cybersecurity Tas Jalali chose Abnormal AI’s behavioral cloud email security (including the Email Productivity add-on) because it could be implemented immediately and begin detecting threats without a full secure email gateway rollout.

Abnormal AI’s behavioral modeling and pattern recognition were deployed across 1,100+ mailboxes to detect and auto-remediate compromised accounts, block targeted attacks, and filter graymail for executives. The result: Abnormal AI prevented more than 3,000 attacks over two years (including 1,658 phishing and 1,152 BEC/impersonation attempts), discovered 50+ compromised vendors, and saved AC Transit 120+ employee hours per month while protecting executives, partners, and organizational reputation.

AC Transit

Tas Jalali

Head of Cybersecurity