Tessian incident
Silent Outbound Check via API Experienced Brief Degradation
Resolved after 2 days 21 hours, on October 23, 2026.
As of October 26, 2026 12:56 UTC all missing checks from Silent Outbound API from the impact period (October 23rd 2026 from 17:35 to 17:55 UTC) have been backfilled. After some additional monitoring, things remain stable and we are moving this incident to resolved.
Update timeline
- monitoring Oct 23, 2026, 07:09 PM UTC
October 23rd 2026 from 17:35 and 17:55 UTC - we experienced a degradation impacting Silent Outbound Checks via API on our US server. Customer who use the Outbound API for silent Adaptive Email DLP checks may notice events missing during this period, if the email would have only been checked by the API. Adaptive Email DLP checks done by all other integrations were not impacted (COM Add-in, M365 Add-in, or Gateway). There is no impact to Inbound Checks. The team worked quickly to restore service. They are currently monitoring and working to backfill Outbound events from 17:35 and 17:55 UTC. We will update once the backfill is completed and close out this incident. In the meantime, please open a support case with any questions.
- resolved Oct 26, 2026, 04:19 PM UTC
As of October 26, 2026 12:56 UTC all missing checks from Silent Outbound API from the impact period (October 23rd 2026 from 17:35 to 17:55 UTC) have been backfilled. After some additional monitoring, things remain stable and we are moving this incident to resolved.
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