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Certificate Anomaly

Low False Positive
ALR-00009 · 2026-04-09T02:02:23Z

Description

TLS certificate anomaly detected on WS-PC-006. Self-signed certificate on port 443 does not match expected corporate CA chain.

Alert Metadata

Alert ID
ALR-00009
Timestamp
2026-04-09T02:02:23Z
Severity
Low
Status
False Positive
Detection Source
Dark Web Monitor
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
WS-PC-006
User Account
h.roberts
Source IP
194.33.62.17
Destination IP
10.0.68.252
Origin Country
RO Romania

MITRE ATT&CK Mapping

Tactic
Defence Evasion
Technique
T1553.004
Reference
attack.mitre.org/techniques/T1553.004

Investigation Timeline

02:02:23 Event ingested by SOC365 Engine
02:02:25 EmilyAI triage started — correlation enrichment
02:02:34 EmilyAI confidence: 87% — escalated to human analyst
02:02:44 Alert assigned to analyst: EmilyAI (auto)
02:04:58 Investigation started — querying SIEM and threat intelligence
02:05:49 Containment action taken — endpoint isolated
02:21:13 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00218 6h ago Certificate Anomaly Critical Open VM-DEV-01
ALR-00311 7h ago Certificate Anomaly Medium Escalated SRV-WEB-01
ALR-00072 7h ago Certificate Anomaly Low Open WS-PC-004
ALR-00236 13h ago Suspicious PowerShell Execution Low Investigating WS-PC-006
ALR-00216 1d ago Unauthorised USB Device Medium Resolved WS-PC-006