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Certificate Anomaly

Medium Resolved
ALR-00265 · 2026-10-11T10:44:46Z

Description

TLS certificate anomaly detected on SRV-APP-01. Self-signed certificate on port 443 does not match expected corporate CA chain.

Alert Metadata

Alert ID
ALR-00265
Timestamp
2026-10-11T10:44:46Z
Severity
Medium
Status
Resolved
Detection Source
Email Gateway
Assigned Analyst
James Okonkwo

Endpoint Information

Hostname
SRV-APP-01
User Account
j.smith
Source IP
103.47.216.210
Destination IP
10.0.93.118
Origin Country
RO Romania

MITRE ATT&CK Mapping

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

Investigation Timeline

10:44:46 Event ingested by SOC365 Engine
10:44:51 EmilyAI triage started — correlation enrichment
10:45:00 EmilyAI confidence: 97% — escalated to human analyst
10:45:31 Alert assigned to analyst: James Okonkwo
10:46:03 Investigation started — querying SIEM and threat intelligence
10:48:16 Containment action taken — endpoint isolated
10:56:57 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00226 1h ago Port Scan Detected Informational Resolved SRV-APP-01
ALR-00258 4h ago Certificate Anomaly Medium Open SW-CORE-01
ALR-00038 12h ago Malware Signature Match Critical Investigating SRV-APP-01
ALR-00390 13h ago Insider Threat Indicator Low Escalated SRV-APP-01
ALR-00160 15h ago Malware Signature Match Low Escalated SRV-APP-01