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Unauthorised USB Device

Informational Investigating
ALR-00162 · 2026-05-23T21:38:39Z

Description

Unauthorised USB mass storage device connected to SW-CORE-01 by user 'a.wilson'. Device blocked by Email Gateway endpoint policy.

Alert Metadata

Alert ID
ALR-00162
Timestamp
2026-05-23T21:38:39Z
Severity
Informational
Status
Investigating
Detection Source
Email Gateway
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
SW-CORE-01
User Account
a.wilson
Source IP
91.159.195.152
Destination IP
10.3.186.227
Origin Country
FR France

MITRE ATT&CK Mapping

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

Investigation Timeline

21:38:39 Event ingested by SOC365 Engine
21:38:44 EmilyAI triage started — correlation enrichment
21:38:50 EmilyAI confidence: 91% — escalated to human analyst
21:39:08 Alert assigned to analyst: EmilyAI (auto)
21:39:58 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00403 5h ago Suspicious Scheduled Task Informational Investigating SW-CORE-01
ALR-00131 10h ago Lateral Movement Detected Low Investigating SW-CORE-01
ALR-00243 12h ago Unauthorised USB Device Medium Resolved SRV-FILE-01
ALR-00240 14h ago Unauthorised USB Device Low Investigating SRV-BACKUP-01
ALR-00091 1d ago Unauthorised USB Device Informational False Positive FW-EDGE-01