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Unauthorised USB Device

Informational Investigating
ALR-00107 · 2026-07-11T12:45:55Z

Description

Unauthorised USB mass storage device connected to SRV-DC-01 by user 'n.clark'. Device blocked by SOC365 Engine endpoint policy.

Alert Metadata

Alert ID
ALR-00107
Timestamp
2026-07-11T12:45:55Z
Severity
Informational
Status
Investigating
Detection Source
SOC365 Engine
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
SRV-DC-01
User Account
n.clark
Source IP
185.25.220.150
Destination IP
10.3.214.118
Origin Country
RU Russia

MITRE ATT&CK Mapping

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

Investigation Timeline

12:45:55 Event ingested by SOC365 Engine
12:45:58 EmilyAI triage started — correlation enrichment
12:46:04 EmilyAI confidence: 89% — escalated to human analyst
12:46:35 Alert assigned to analyst: EmilyAI (auto)
12:46:40 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00007 12h ago DecoyPulse Honeypot Triggered Medium False Positive SRV-DC-01
ALR-00354 14h ago Suspicious PowerShell Execution High Escalated SRV-DC-01
ALR-00337 15h ago Rogue DHCP Server Low Escalated SRV-DC-01
ALR-00209 21h ago Data Exfiltration Attempt Low False Positive SRV-DC-01
ALR-00372 23h ago Unauthorised USB Device Low Escalated WS-MAC-005