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Unauthorised USB Device

Low Resolved
ALR-00318 · 2026-07-06T07:47:31Z

Description

Unauthorised USB mass storage device connected to SRV-FILE-01 by user 'system'. Device blocked by Endpoint Agent endpoint policy.

Alert Metadata

Alert ID
ALR-00318
Timestamp
2026-07-06T07:47:31Z
Severity
Low
Status
Resolved
Detection Source
Endpoint Agent
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
SRV-FILE-01
User Account
system
Source IP
103.221.216.64
Destination IP
10.2.161.223
Origin Country
RO Romania

MITRE ATT&CK Mapping

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

Investigation Timeline

07:47:31 Event ingested by SOC365 Engine
07:47:33 EmilyAI triage started — correlation enrichment
07:47:43 EmilyAI confidence: 98% — escalated to human analyst
07:47:53 Alert assigned to analyst: EmilyAI (auto)
07:48:16 Investigation started — querying SIEM and threat intelligence
07:56:12 Containment action taken — endpoint isolated
08:04:15 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00230 2h ago Unauthorised USB Device Medium Open SRV-APP-01
ALR-00371 11h ago Unauthorised USB Device Low Open WS-LAP-011
ALR-00340 15h ago Unauthorised USB Device Critical Investigating SW-CORE-01
ALR-00370 1d ago Unauthorised USB Device High Open VM-DEV-01
ALR-00432 1d ago Unauthorised USB Device Medium Escalated WS-PC-003