Outage in Tessian US

Delayed Events I&R

Resolved Minor

September 02, 2025 - Started 5 months ago - Lasted 1 day

Incident Report

Inbound protection experienced degraded performance between 4:00 PM-6:00 PM UTC, with an additional 30-minute drop at 8:00 PM UTC. This issue has since been remediated, and protection is now fully restored. Investigate & Respond security events remain delayed and some events may lack email content while our team continues to investigate. Our team is actively working to resolve the remaining issues and will provide further updates as progress is made.

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Latest Updates ( sorted recent to last )

MONITORING 5 months ago - at 09/03/2025 10:22AM

Investigate & Respond security events have now caught up. Our team is still monitoring the situation - we will provide further updates on the status of this.

INVESTIGATING 5 months ago - at 09/02/2025 08:54PM

Inbound protection experienced degraded performance between 4:00 PM-6:00 PM UTC, with an additional 30-minute drop at 8:00 PM UTC. This issue has since been remediated, and protection is now fully restored.

Investigate & Respond security events remain delayed and some events may lack email content while our team continues to investigate. Our team is actively working to resolve the remaining issues and will provide further updates as progress is made.

Latest Tessian US outages

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M365 Add-In: Silently failing checks for a subset of users - 2 months ago

M365 Add-in Impacted by Microsoft Library - 4 months ago

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