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Unauthorised USB Device

Informational Investigating
ALR-00339 · 2026-04-08T02:38:36Z

Description

Unauthorised USB mass storage device connected to AP-WIFI-03 by user 'a.wilson'. Device blocked by Endpoint Agent endpoint policy.

Alert Metadata

Alert ID
ALR-00339
Timestamp
2026-04-08T02:38:36Z
Severity
Informational
Status
Investigating
Detection Source
Endpoint Agent
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
AP-WIFI-03
User Account
a.wilson
Source IP
185.20.220.17
Destination IP
10.0.20.191
Origin Country
RU Russia

MITRE ATT&CK Mapping

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

Investigation Timeline

02:38:36 Event ingested by SOC365 Engine
02:38:40 EmilyAI triage started — correlation enrichment
02:38:42 EmilyAI confidence: 88% — escalated to human analyst
02:38:51 Alert assigned to analyst: EmilyAI (auto)
02:41:05 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00258 2h ago Phishing Email Blocked Informational Open AP-WIFI-03
ALR-00363 4h ago Unauthorised USB Device Medium Investigating WS-PC-001
ALR-00126 8h ago Certificate Anomaly Informational Escalated AP-WIFI-03
ALR-00042 10h ago Unauthorised USB Device Informational False Positive SRV-BACKUP-01
ALR-00301 11h ago Unusual Outbound Traffic Low Investigating AP-WIFI-03