Tessian EU incident
Intermittent Inbound & Outbound Email Check Delays for EU
Tessian EU experienced a minor incident on February 3, 2026 affecting Core Email Protection API and AEDLP Email Misdelivery Protection and 1 more component, lasting —. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- monitoring Jan 30, 2026, 06:07 PM UTC
Status: Monitoring We observed intermittent email check timeouts on our EU server earlier today. Between 11:00-1:00 UTC: Adaptive Email DLP - up to 6% of Outbound emails may have sent partially or fully unchecked. Core Email Protection API - up to 2% of Inbound emails may have been delivered partially or fully unchecked. The issue has stabilized, and our team has not seen a recurrence as we closely monitor. We will continue to monitor through the weekend and update if anything changes. Affected components Core Email Protection API (Degraded performance) AEDLP Email Exfiltration Protection (Degraded performance) AEDLP Email Misdelivery Protection (Degraded performance)
- monitoring Feb 02, 2026, 11:59 AM UTC
Status: Monitoring A small number of email check timeouts were seen on our EU server earlier today. Between 08:22-09:52 UTC: Core Email Protection API - up to 0.06% of Inbound emails may have been delivered partially or fully unchecked. We will continue to monitor and update if anything changes. Affected components AEDLP Email Misdelivery Protection (Degraded performance) Core Email Protection API (Degraded performance) AEDLP Email Exfiltration Protection (Degraded performance)
- resolved Feb 03, 2026, 10:48 AM UTC
Status: Resolved After monitoring for the past day no further increase in timeouts has been observed and email checks have returned to normal. Affected components Core Email Protection API (Operational) AEDLP Email Exfiltration Protection (Operational) AEDLP Email Misdelivery Protection (Operational)