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Unauthorised USB Device

Low Open
ALR-00241 · 2026-04-06T22:32:13Z

Description

Unauthorised USB mass storage device connected to SRV-FILE-01 by user 's.jones'. Device blocked by Email Gateway endpoint policy.

Alert Metadata

Alert ID
ALR-00241
Timestamp
2026-04-06T22:32:13Z
Severity
Low
Status
Open
Detection Source
Email Gateway
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
SRV-FILE-01
User Account
s.jones
Source IP
185.54.220.226
Destination IP
10.1.222.112
Origin Country
RU Russia

MITRE ATT&CK Mapping

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

Investigation Timeline

22:32:13 Event ingested by SOC365 Engine
22:32:14 EmilyAI triage started — correlation enrichment
22:32:27 EmilyAI confidence: 89% — escalated to human analyst
22:32:42 Alert assigned to analyst: EmilyAI (auto)
22:33:03 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00493 10h ago Unauthorised USB Device Medium Investigating WS-PC-004
ALR-00102 13h ago Tor Exit Node Connection Low Open SRV-FILE-01
ALR-00457 1d ago Unauthorised USB Device Low False Positive AP-WIFI-03
ALR-00202 1d ago Unauthorised USB Device High Escalated SRV-FILE-01
ALR-00163 1d ago Unauthorised USB Device Informational False Positive WS-LAP-011