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Unauthorised USB Device

Low Investigating
ALR-00428 · 2026-10-12T00:06:22Z

Description

Unauthorised USB mass storage device connected to WS-PC-002 by user 'j.smith'. Device blocked by SOC365 Engine endpoint policy.

Alert Metadata

Alert ID
ALR-00428
Timestamp
2026-10-12T00:06:22Z
Severity
Low
Status
Investigating
Detection Source
SOC365 Engine
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
WS-PC-002
User Account
j.smith
Source IP
194.164.62.142
Destination IP
10.3.46.247
Origin Country
IR Iran

MITRE ATT&CK Mapping

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

Investigation Timeline

00:06:22 Event ingested by SOC365 Engine
00:06:24 EmilyAI triage started — correlation enrichment
00:06:33 EmilyAI confidence: 98% — escalated to human analyst
00:06:42 Alert assigned to analyst: EmilyAI (auto)
00:07:31 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00350 1h ago Data Exfiltration Attempt Informational Investigating WS-PC-002
ALR-00126 7h ago Unauthorised USB Device Medium Resolved WS-LAP-010
ALR-00144 8h ago Lateral Movement Detected Low False Positive WS-PC-002
ALR-00498 8h ago Unauthorised USB Device Medium False Positive WS-PC-002
ALR-00323 9h ago Anomalous DNS Query Medium False Positive WS-PC-002