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Unauthorised USB Device

Informational Resolved
ALR-00134 · 2026-07-09T22:41:39Z

Description

Unauthorised USB mass storage device connected to SRV-BACKUP-01 by user 'e.evans'. Device blocked by Attack Surface Scanner endpoint policy.

Alert Metadata

Alert ID
ALR-00134
Timestamp
2026-07-09T22:41:39Z
Severity
Informational
Status
Resolved
Detection Source
Attack Surface Scanner
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
SRV-BACKUP-01
User Account
e.evans
Source IP
91.118.195.187
Destination IP
10.2.95.138
Origin Country
IR Iran

MITRE ATT&CK Mapping

Tactic
Initial Access
Technique
T1091
Reference
attack.mitre.org/techniques/T1091

Investigation Timeline

22:41:39 Event ingested by SOC365 Engine
22:41:41 EmilyAI triage started — correlation enrichment
22:41:44 EmilyAI confidence: 90% — escalated to human analyst
22:42:05 Alert assigned to analyst: EmilyAI (auto)
22:44:39 Investigation started — querying SIEM and threat intelligence
22:50:56 Containment action taken — endpoint isolated
23:00:31 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00297 45m ago Tor Exit Node Connection Low Investigating SRV-BACKUP-01
ALR-00219 4h ago Unauthorised USB Device Medium Investigating SW-CORE-01
ALR-00020 13h ago Unauthorised USB Device Low Escalated WS-LAP-012
ALR-00371 14h ago Unauthorised USB Device Low Investigating WS-LAP-012
ALR-00292 15h ago C2 Beacon Activity High Escalated SRV-BACKUP-01