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Unauthorised USB Device

Medium False Positive
ALR-00242 · 2026-07-07T15:58:04Z

Description

Unauthorised USB mass storage device connected to AP-WIFI-03 by user 'c.williams'. Device blocked by EmilyAI Triage endpoint policy.

Alert Metadata

Alert ID
ALR-00242
Timestamp
2026-07-07T15:58:04Z
Severity
Medium
Status
False Positive
Detection Source
EmilyAI Triage
Assigned Analyst
Emma Richardson

Endpoint Information

Hostname
AP-WIFI-03
User Account
c.williams
Source IP
103.120.216.106
Destination IP
10.2.23.100
Origin Country
US United States

MITRE ATT&CK Mapping

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

Investigation Timeline

15:58:04 Event ingested by SOC365 Engine
15:58:09 EmilyAI triage started — correlation enrichment
15:58:09 EmilyAI confidence: 85% — escalated to human analyst
15:58:42 Alert assigned to analyst: Emma Richardson
15:59:43 Investigation started — querying SIEM and threat intelligence
16:05:41 Containment action taken — endpoint isolated
16:17:30 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00344 4h ago Unauthorised USB Device Low Investigating AP-WIFI-03
ALR-00446 9h ago Unauthorised USB Device Informational Open WS-PC-002
ALR-00496 12h ago Brute Force SSH Medium Open AP-WIFI-03
ALR-00260 15h ago Unauthorised USB Device Low False Positive SRV-MAIL-01
ALR-00188 20h ago Unauthorised USB Device Low Escalated WS-LAP-010