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Unauthorised USB Device

Informational Resolved
ALR-00187 · 2026-10-06T05:23:42Z

Description

Unauthorised USB mass storage device connected to SRV-MAIL-01 by user 'h.roberts'. Device blocked by DecoyPulse endpoint policy.

Alert Metadata

Alert ID
ALR-00187
Timestamp
2026-10-06T05:23:42Z
Severity
Informational
Status
Resolved
Detection Source
DecoyPulse
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
SRV-MAIL-01
User Account
h.roberts
Source IP
103.126.216.87
Destination IP
10.3.183.56
Origin Country
NG Nigeria

MITRE ATT&CK Mapping

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

Investigation Timeline

05:23:42 Event ingested by SOC365 Engine
05:23:43 EmilyAI triage started — correlation enrichment
05:23:52 EmilyAI confidence: 85% — escalated to human analyst
05:23:57 Alert assigned to analyst: EmilyAI (auto)
05:25:44 Investigation started — querying SIEM and threat intelligence
05:32:57 Containment action taken — endpoint isolated
05:40:06 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00170 4h ago Lateral Movement Detected High Open SRV-MAIL-01
ALR-00466 10h ago Unauthorised USB Device Low Investigating WS-PC-002
ALR-00449 10h ago Unauthorised USB Device Medium Investigating SRV-MAIL-01
ALR-00456 14h ago Unauthorised USB Device High Investigating AP-WIFI-03
ALR-00073 15h ago Unauthorised USB Device Informational Escalated WS-LAP-010