Cisco Secure Email Threat Defense Outage History

Cisco Secure Email Threat Defense major outage View live status →

There were 4 Cisco Secure Email Threat Defense outages since April 2, 2026 totaling 58h 9m of downtime. Each is summarised below — incident details, duration, and resolution information.

Source: https://ciscosecureemailthreatdefense.statuspage.io

Minor April 30, 2026

Degraded Data Visibility in Dashboard and Messaging Views

Detected by Pingoru
Apr 30, 2026, 04:45 PM UTC
Resolved
May 01, 2026, 02:45 PM UTC
Duration
21h 59m
Affected: Management Portal
Timeline · 3 updates
  1. investigating Apr 30, 2026, 04:45 PM UTC

    We are currently investigating an issue impacting data visibility and search functionality for a subset of customers. Some users may experience missing data specifically in the Dashboard and Messaging views, as well as incomplete search results. Data ingestion is not impacted, and no data loss has occurred. We are working to restore normal functionality and will provide updates as progress is made.

  2. monitoring May 01, 2026, 08:22 AM UTC

    As of 7:35 UTC, the issue has been resolved and functionality has been restored to normal. We are actively monitoring the system to ensure continued stability.

  3. resolved May 01, 2026, 02:45 PM UTC

    The issue has been fully resolved and all services are now operating normally. Dashboard and Messaging views have been restored, and search results are complete. If you have any questions, please contact Cisco TAC: http://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

Read the full incident report →

Notice April 13, 2026

Degraded Performance in Journaled Email Scanning

Detected by Pingoru
Apr 13, 2026, 01:44 PM UTC
Resolved
Apr 13, 2026, 05:05 PM UTC
Duration
3h 20m
Timeline · 1 update
  1. resolved Apr 13, 2026, 01:44 PM UTC

    On April 13, 2026, between 12:05 PM UTC and 12:50 PM UTC, customers may have experienced intermittent issues with the scanning of journaled emails. The issue has now been mitigated. Journaled email scanning has returned to normal and is functioning properly. If you have any questions, please contact Cisco TAC: http://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

Read the full incident report →

Minor April 8, 2026

ETD - EU and North America Regions Email Copies Scanning issue

Detected by Pingoru
Apr 08, 2026, 07:10 AM UTC
Resolved
Apr 09, 2026, 02:53 PM UTC
Duration
1d 7h
Affected: Message ProcessingMessage Processing
Timeline · 8 updates
  1. investigating Apr 08, 2026, 07:10 AM UTC

    From around 6AM UTC Some customers may experience intermittent issues with email copies scanning on ETD hosted in the EU region. Our teams are actively investigating the issue and working to restore normal service as quickly as possible. We will provide updates as more information becomes available.

  2. investigating Apr 08, 2026, 07:27 AM UTC

    From about 7:25 UTC we are experiencing errors in email copies scanning from our Journaling customers. We are actively investigating the issue and working to restore normal service as quickly as possible. We will provide updates as more information becomes available.

  3. investigating Apr 08, 2026, 07:59 AM UTC

    We are continuing to investigate the issue affecting email copies scanning for some customers in the EU region. Our teams are working to identify the root cause and restore normal service as quickly as possible.

  4. investigating Apr 08, 2026, 09:34 AM UTC

    At 8:30 UTC, we have implemented a temporary workaround to address the issue affecting email copies scanning for some customers in the EU region. Email copies scanning functionality has resumed, but we are still investigating to identify and resolve the underlying root cause. Additional updates will be provided as more information becomes available.

  5. monitoring Apr 08, 2026, 10:48 AM UTC

    Email copies scanning in the EU region is now operating successfully following the implementation of a temporary workaround. We will continue to monitor the situation to ensure stability and will provide further updates as needed. Thank you for your patience and understanding.

  6. identified Apr 08, 2026, 11:33 AM UTC

    We are aware of a similar email copies scanning issue now affecting customers in the North America region, starting at 10:34 UTC. Our team is applying the same mitigation steps that were effective in the EU region and is working to restore normal service as quickly as possible.

  7. identified Apr 08, 2026, 11:42 AM UTC

    Email copies scanning in the North America region is now operating successfully following the implementation of a temporary workaround. We will continue to monitor the situation to ensure stability and will provide further updates as needed. Thank you for your patience and understanding.

  8. resolved Apr 09, 2026, 02:53 PM UTC

    Email copies scanning for Cisco Secure Email Threat Defense has been fully restored across both the EU and North America regions. Services are operating normally. We’re Here to Help If you have any questions, please contact Cisco TAC: http://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

Read the full incident report →

Minor April 2, 2026

Service Degradation in North American Environment

Detected by Pingoru
Apr 02, 2026, 07:17 PM UTC
Resolved
Apr 02, 2026, 08:24 PM UTC
Duration
1h 6m
Affected: Message Processing
Timeline · 2 updates
  1. investigating Apr 02, 2026, 07:17 PM UTC

    Secure Email Threat Defense is experiencing a delay in email processing. We are working to address this issue and will post an update when it is resolved.

  2. resolved Apr 02, 2026, 08:24 PM UTC

    The issue causing delays in email processing for Secure Email Threat Defense has been resolved. Services are now operating normally. We’re Here to Help If you have any questions or need assistance, please contact our support team.

Read the full incident report →

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