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Unauthorised USB Device

Informational False Positive
ALR-00336 · 2026-10-10T16:36:37Z

Description

Unauthorised USB mass storage device connected to VM-DEV-01 by user 'h.roberts'. Device blocked by Network IDS endpoint policy.

Alert Metadata

Alert ID
ALR-00336
Timestamp
2026-10-10T16:36:37Z
Severity
Informational
Status
False Positive
Detection Source
Network IDS
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
VM-DEV-01
User Account
h.roberts
Source IP
103.92.216.131
Destination IP
10.3.83.224
Origin Country
DE Germany

MITRE ATT&CK Mapping

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

Investigation Timeline

16:36:37 Event ingested by SOC365 Engine
16:36:39 EmilyAI triage started — correlation enrichment
16:36:52 EmilyAI confidence: 79% — escalated to human analyst
16:37:15 Alert assigned to analyst: EmilyAI (auto)
16:38:35 Investigation started — querying SIEM and threat intelligence
16:42:47 Containment action taken — endpoint isolated
16:48:24 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00224 8h ago Unauthorised USB Device High Open SRV-SQL-01
ALR-00315 14h ago DLP Policy Violation Informational Resolved VM-DEV-01
ALR-00436 21h ago Malware Signature Match Informational Resolved VM-DEV-01
ALR-00138 22h ago Unauthorised USB Device Low Escalated WS-PC-001
ALR-00467 23h ago Unauthorised USB Device Informational Escalated SRV-SQL-01