Case Study: Hampton Roads Sanitation District achieves advanced email threat protection and major time savings with Abnormal AI

Human Behavior AI Protects Hampton Roads Sanitation District Ecosystems

Hampton Roads Sanitation District (HRSD) protects wastewater and waterways for nearly 2 million residents around Chesapeake Bay but faced a steady stream of account takeovers, BEC and extortion emails that bypassed Microsoft 365 E5 and consumed IT resources. To close that gap, Hampton Roads Sanitation District turned to Abnormal AI, deploying Inbound Email Security, Account Takeover Protection, AI Security Mailbox, and Email Productivity to address human-driven threats and reduce manual investigation load.

Abnormal AI’s behavioral and autonomous AI stopped advanced attacks that escaped Microsoft Defender, automated reporting, investigations, remediation and user follow‑up, and integrated with CrowdStrike to strengthen endpoint protection. The deployment delivered measurable impact: 1,108 hours saved in 90 days from graymail filtering, 32 CISO hours saved monthly through auto detection and remediation, and zero false positives or missed attacks in 30 days, freeing HRSD to expand its security team and improve employee training.

Hampton Roads Sanitation District

Roger Caslow

Chief Information Security Officer