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Unauthorised USB Device

Medium Investigating
ALR-00350 · 2026-07-08T19:32:45Z

Description

Unauthorised USB mass storage device connected to SRV-MAIL-01 by user 'n.clark'. Device blocked by DLP Module endpoint policy.

Alert Metadata

Alert ID
ALR-00350
Timestamp
2026-07-08T19:32:45Z
Severity
Medium
Status
Investigating
Detection Source
DLP Module
Assigned Analyst
Anika Patel

Endpoint Information

Hostname
SRV-MAIL-01
User Account
n.clark
Source IP
103.6.216.94
Destination IP
10.3.207.55
Origin Country
KP North Korea

MITRE ATT&CK Mapping

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

Investigation Timeline

19:32:45 Event ingested by SOC365 Engine
19:32:46 EmilyAI triage started — correlation enrichment
19:32:50 EmilyAI confidence: 80% — escalated to human analyst
19:33:29 Alert assigned to analyst: Anika Patel
19:33:47 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00364 1h ago Unauthorised USB Device Informational Open WS-PC-004
ALR-00307 3h ago Brute Force SSH Low Investigating SRV-MAIL-01
ALR-00479 9h ago Suspicious Scheduled Task Low Resolved SRV-MAIL-01
ALR-00361 11h ago DecoyPulse Honeypot Triggered Informational False Positive SRV-MAIL-01
ALR-00253 17h ago Rogue DHCP Server High Investigating SRV-MAIL-01