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Certificate Anomaly

Medium Escalated
ALR-00145 · 2026-07-10T02:05:35Z

Description

TLS certificate anomaly detected on WS-PC-003. Self-signed certificate on port 443 does not match expected corporate CA chain.

Alert Metadata

Alert ID
ALR-00145
Timestamp
2026-07-10T02:05:35Z
Severity
Medium
Status
Escalated
Detection Source
Firewall
Assigned Analyst
Emma Richardson

Endpoint Information

Hostname
WS-PC-003
User Account
a.wilson
Source IP
91.253.195.216
Destination IP
10.3.102.22
Origin Country
FR France

MITRE ATT&CK Mapping

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

Investigation Timeline

02:05:35 Event ingested by SOC365 Engine
02:05:38 EmilyAI triage started — correlation enrichment
02:05:50 EmilyAI confidence: 86% — escalated to human analyst
02:05:57 Alert assigned to analyst: Emma Richardson
02:07:11 Investigation started — querying SIEM and threat intelligence
02:09:09 Containment action taken — endpoint isolated
02:19:24 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00172 1h ago Certificate Anomaly Medium Investigating WS-LAP-011
ALR-00314 4h ago Ransomware Behaviour Detected High Open WS-PC-003
ALR-00017 6h ago Malware Signature Match Informational False Positive WS-PC-003
ALR-00464 10h ago Certificate Anomaly Medium False Positive WS-PC-004
ALR-00299 11h ago Suspicious Scheduled Task Low Open WS-PC-003