Case Study: Boohoo Group achieves enhanced email security and significant time and cost savings with Abnormal AI

Boohoo Fashions a New Email Security Ethos with Abnormal

Boohoo Group, the global fashion and beauty retailer managing 13 brands and 7,800+ protected mailboxes, was facing credential phishing, invoice fraud, vendor compromise and a flood of graymail and spam despite a traditional SEG in front of Microsoft 365. To improve detection, automate remediation, and integrate tightly with Microsoft, Boohoo turned to Abnormal AI and its behavioural AI-based suite (Inbound Email Security, Email Account Takeover Protection, Abuse Mailbox Automation and Email Productivity).

Abnormal AI deployed an API-integrated, behaviour-first solution that learned normal email patterns, auto‑remediated threats, and filtered graymail, with a proof-of-concept standing up in hours. The deployment delivered measurable impact: zero missed attacks or false positives in 30 days, about 40 security-team hours saved per month, and roughly 463 employee hours saved on graymail and spam in 90 days, while surfacing compromised vendor accounts and cutting manual remediation work.

Boohoo Group

Jonny Concannon

Group Information Security Manager