Abnormal Security incident
Email Delivery, Detection, and Remediation Disruption for Microsoft 365 Customers
Ongoing since 06:21 PM UTC, affecting Inbound Email Security (IES) and Inbound Email Security (IES)(Fedramp) and 1 more.
Starting at 17:20 UTC on November 12, 2026, Abnormal began experiencing a service disruption affecting Inbound Email Security, AI Security Mailbox, and Graymail for some hosted US and EU customers using Microsoft 365. Affected customers may experience delays in threat detection, removal of malicious emails, processing of reported suspicious emails, and Graymail filtering. Initial findings also indicate that most Inline Microsoft 365 emails routed through Abnormal before delivery are being held up, potentially delaying delivery to recipients. Customers using Google Workspace are unaffected. Abnormal is investigating the issue and will provide further updates as more information becomes available.
Affected components
Update timeline
- identified Nov 12, 2026, 06:21 PM UTC
Starting at 17:20 UTC on November 12, 2026, Abnormal began experiencing a service disruption affecting Inbound Email Security, AI Security Mailbox, and Graymail for some hosted US and EU customers using Microsoft 365. Affected customers may experience delays in threat detection, removal of malicious emails, processing of reported suspicious emails, and Graymail filtering. Initial findings also indicate that most Inline Microsoft 365 emails routed through Abnormal before delivery are being held up, potentially delaying delivery to recipients. Customers using Google Workspace are unaffected. Abnormal is investigating the issue and will provide further updates as more information becomes available.
Your product runs on more than Abnormal Security
Add the vendors you depend on and get one message when any of them reports trouble. Free for 3 vendors, no card.
Amazon Web Services