Tessian incident

Some Core Email Protection (CEPAPI) Security Events unavailable.

Minor Resolved View vendor source →

Tessian experienced a minor incident on March 5, 2026 affecting Proofpoint API and Gateway and 1 more component, lasting —. The incident has been resolved; the full update timeline is below.

Started
Mar 05, 2026, 11:42 AM UTC
Resolved
Mar 05, 2026, 11:42 AM UTC
Duration
—
Detected by Pingoru
Mar 05, 2026, 11:42 AM UTC

Affected components

Proofpoint APIGatewayProofpoint Cloud Email Security PlatformProofpoint PortalM365 Add-inCOM Add-in for WindowsCore Email Protection APIAEDLP Email Misdelivery ProtectionAEDLP Email Exfiltration ProtectionReported Emails

Update timeline

  1. resolved Mar 05, 2026, 11:42 AM UTC

    Status: Resolved All security events have now been successfully restored and validated. Remediation is now completed. Affected components AEDLP Email Misdelivery Protection (Operational) COM Add-in for Windows (Operational) Core Email Protection API (Operational) Gateway (Operational) Proofpoint API (Operational) M365 Add-in (Operational) AEDLP Email Exfiltration Protection (Operational) Proofpoint Portal (Operational) Reported Emails (Operational) Investigate and Respond - Email Search (Operational) Proofpoint Cloud Email Security Platform (Operational) Core Email Protection API (Operational)