Case Study: ClearBank achieves advanced email threat protection and major productivity gains with Abnormal AI

ClearBank Secures Email with Human Behaviour AI from Abnormal

ClearBank, the UK's first cloud-native clearing bank, faced a surge in credential phishing, QR‑code attacks and convincing brand‑impersonation emails that bypassed Microsoft 365 defenses and created heavy graymail and SOC workload. To add a scalable, M365‑integrated layer, ClearBank turned to Abnormal AI, deploying Abnormal’s Inbound Email Security, Account Takeover Protection, AI Security Mailbox and Email Productivity solutions.

Abnormal AI integrated via API/OAuth and used human‑behaviour AI to detect anomalous senders and content, block spear‑phishing and brand impersonation, and automatically sort graymail out of user inboxes. The solution stopped 200 advanced C‑suite attacks in 90 days, saved 167 hours companywide from graymail filtering in 90 days and 112 SOC hours on email reporting in 30 days, while providing scalable, low‑maintenance protection as ClearBank grows.

ClearBank

Bernard Wright

Chief Information Security Officer