Arctic Wolf experienced a major incident on July 23, 2026 affecting Managed Detection and Response-Sensor Infrastructure and Managed Detection and Response-Sensor Infrastructure and 1 more component, lasting 18h 59m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- monitoring Jul 23, 2026, 06:38 PM UTC
We are aware of ongoing Vendor issues affecting ingestion for ESET and O365 Cloud Sensors. Users may experience delays in ticketing for these event types. Our teams are monitoring ESET and Microsoft services for recovery Next Update: 07/23/26 20:00 UTC
- monitoring Jul 23, 2026, 08:26 PM UTC
We continue to monitor services affecting ingestion for ESET and O365 Cloud Sensors. Next Update: 07/23/26 21:30 UTC
- resolved Jul 24, 2026, 01:37 PM UTC
Upstream Vendors report their incidents have resolved Arctic Wolf resources have verified recovery of ingestion for ESET and O365 Cloud Sensors. Incident Resolved