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Apr 10, 2026

Weekly Abnormal Detection Enhancements

A weekly summary of detection enhancements delivered by the Abnormal engineering team.

Weekly Detection Enhancements - Week of April 10

  • Enhanced detection of emails from unknown senders originating from high-risk IPs with no prior communication history

  • Strengthened detection of bulk phishing campaigns sent via BCC from newly registered domains with no sender reputation

  • Expanded link analysis to improve detection of malicious or obfuscated URLs embedded in email content

  • Launched subject-line analysis to identify suspicious patterns and evasion techniques used in attack campaigns

  • Improved account takeover detection for low-activity mailboxes with limited historical behavioral signals

Protect Against Evolving Email Threats

See how behavioral AI detects attacks that legacy defenses miss.

Weekly Abnormal Detection Enhancements | What's New | Abnormal AI