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Certificate Anomaly

Medium Open
ALR-00239 · 2026-05-22T11:00:03Z

Description

TLS certificate anomaly detected on WS-PC-001. Self-signed certificate on port 443 does not match expected corporate CA chain.

Alert Metadata

Alert ID
ALR-00239
Timestamp
2026-05-22T11:00:03Z
Severity
Medium
Status
Open
Detection Source
EmilyAI Triage
Assigned Analyst
Anika Patel

Endpoint Information

Hostname
WS-PC-001
User Account
n.clark
Source IP
194.184.62.197
Destination IP
10.3.131.98
Origin Country
NG Nigeria

MITRE ATT&CK Mapping

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

Investigation Timeline

11:00:03 Event ingested by SOC365 Engine
11:00:07 EmilyAI triage started — correlation enrichment
11:00:16 EmilyAI confidence: 84% — escalated to human analyst
11:00:42 Alert assigned to analyst: Anika Patel
11:02:57 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00198 2h ago Phishing Email Blocked Medium Escalated WS-PC-001
ALR-00353 5h ago Certificate Anomaly Medium Open WS-LAP-011
ALR-00247 11h ago Certificate Anomaly Low Resolved SW-CORE-01
ALR-00099 13h ago Certificate Anomaly Low Escalated SW-CORE-01
ALR-00466 16h ago Certificate Anomaly Informational Open SRV-BACKUP-01