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Unauthorised USB Device

High Escalated
ALR-00453 · 2026-07-08T23:13:25Z

Description

Unauthorised USB mass storage device connected to SRV-APP-01 by user 'f.hall'. Device blocked by DecoyPulse endpoint policy.

Alert Metadata

Alert ID
ALR-00453
Timestamp
2026-07-08T23:13:25Z
Severity
High
Status
Escalated
Detection Source
DecoyPulse
Assigned Analyst
Anika Patel

Endpoint Information

Hostname
SRV-APP-01
User Account
f.hall
Source IP
185.77.220.192
Destination IP
10.3.152.88
Origin Country
RO Romania

MITRE ATT&CK Mapping

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

Investigation Timeline

23:13:25 Event ingested by SOC365 Engine
23:13:28 EmilyAI triage started — correlation enrichment
23:13:30 EmilyAI confidence: 82% — escalated to human analyst
23:13:57 Alert assigned to analyst: Anika Patel
23:16:01 Investigation started — querying SIEM and threat intelligence
23:17:02 Containment action taken — endpoint isolated
23:26:29 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00292 2h ago Phishing Email Blocked Low Open SRV-APP-01
ALR-00463 11h ago Unauthorised USB Device Low Investigating AP-WIFI-03
ALR-00432 17h ago Unauthorised USB Device Informational False Positive SRV-BACKUP-01
ALR-00088 22h ago Unauthorised USB Device Medium Resolved FW-EDGE-01
ALR-00177 1d ago Certificate Anomaly Medium False Positive SRV-APP-01