Cisco Secure Email Threat Defense incident

Intermittent Logon Timeouts Affecting US Environment – Email Processing Unaffected

Notice Resolved View vendor source →

Cisco Secure Email Threat Defense experienced a notice incident on December 3, 2025, lasting 1h 10m. The incident has been resolved; the full update timeline is below.

Started
Dec 03, 2025, 03:14 PM UTC
Resolved
Dec 03, 2025, 04:25 PM UTC
Duration
1h 10m
Detected by Pingoru
Dec 03, 2025, 03:14 PM UTC

Update timeline

  1. identified Dec 03, 2025, 03:14 PM UTC

    We are currently experiencing frequent intermittent timeouts during the logon process affecting the US environment. This issue does not impact email intake and processing. The root cause has been identified, and our team is actively working on a resolution. We will provide further updates as soon as more information becomes available.

  2. resolved Dec 03, 2025, 04:25 PM UTC

    This incident has been resolved.