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Unauthorised USB Device

Informational False Positive
ALR-00035 · 2026-07-10T03:19:02Z

Description

Unauthorised USB mass storage device connected to WS-PC-004 by user 'p.thomas'. Device blocked by EmilyAI Triage endpoint policy.

Alert Metadata

Alert ID
ALR-00035
Timestamp
2026-07-10T03:19:02Z
Severity
Informational
Status
False Positive
Detection Source
EmilyAI Triage
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
WS-PC-004
User Account
p.thomas
Source IP
185.65.220.228
Destination IP
10.3.25.115
Origin Country
BR Brazil

MITRE ATT&CK Mapping

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

Investigation Timeline

03:19:02 Event ingested by SOC365 Engine
03:19:03 EmilyAI triage started — correlation enrichment
03:19:15 EmilyAI confidence: 89% — escalated to human analyst
03:19:40 Alert assigned to analyst: EmilyAI (auto)
03:21:16 Investigation started — querying SIEM and threat intelligence
03:25:14 Containment action taken — endpoint isolated
03:34:31 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00351 13m ago Unauthorised USB Device Informational Resolved SRV-DC-01
ALR-00303 2h ago Unauthorised USB Device High Investigating WS-LAP-010
ALR-00426 3h ago Privilege Escalation Attempt High Investigating WS-PC-004
ALR-00212 4h ago Unauthorised USB Device Low Open SRV-SQL-01
ALR-00230 9h ago Unauthorised USB Device Critical Open SRV-FILE-01