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DeviceFileEventsDeviceFileEvents
| where Timestamp > ago(1d)
| where FileName =~ "toshdpdb.exe" or (FileName endswith ".sys" and FolderPath has "toshiba")
| project Timestamp, DeviceName, FileName, FolderPath, InitiatingProcessFileName, InitiatingProcessAccountName
Hunting queries are starting points for threat hunting & detection engineering — validate table/column names against your own workspace schema and tune thresholds before turning any of these into a production alert rule.