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Unauthorised USB Device

Medium Escalated
ALR-00178 · 2026-07-07T11:07:31Z

Description

Unauthorised USB mass storage device connected to WS-PC-002 by user 'k.brown'. Device blocked by Attack Surface Scanner endpoint policy.

Alert Metadata

Alert ID
ALR-00178
Timestamp
2026-07-07T11:07:31Z
Severity
Medium
Status
Escalated
Detection Source
Attack Surface Scanner
Assigned Analyst
Sarah Chen

Endpoint Information

Hostname
WS-PC-002
User Account
k.brown
Source IP
45.95.148.244
Destination IP
10.2.4.139
Origin Country
NG Nigeria

MITRE ATT&CK Mapping

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

Investigation Timeline

11:07:31 Event ingested by SOC365 Engine
11:07:34 EmilyAI triage started — correlation enrichment
11:07:36 EmilyAI confidence: 88% — escalated to human analyst
11:08:09 Alert assigned to analyst: Sarah Chen
11:08:29 Investigation started — querying SIEM and threat intelligence
11:14:11 Containment action taken — endpoint isolated
11:18:04 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00312 45m ago Anomalous DNS Query Medium False Positive WS-PC-002
ALR-00364 1h ago Unauthorised USB Device Informational Open WS-PC-004
ALR-00382 4h ago Credential Stuffing Attempt Informational Escalated WS-PC-002
ALR-00192 6h ago Port Scan Detected High Investigating WS-PC-002
ALR-00388 12h ago Malware Signature Match Medium Investigating WS-PC-002