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Certificate Anomaly

Medium Investigating
ALR-00269 · 2026-10-08T07:35:04Z

Description

TLS certificate anomaly detected on WS-PC-002. Self-signed certificate on port 443 does not match expected corporate CA chain.

Alert Metadata

Alert ID
ALR-00269
Timestamp
2026-10-08T07:35:04Z
Severity
Medium
Status
Investigating
Detection Source
Cloud Connector
Assigned Analyst
Anika Patel

Endpoint Information

Hostname
WS-PC-002
User Account
d.walker
Source IP
185.12.220.90
Destination IP
10.2.160.185
Origin Country
UA Ukraine

MITRE ATT&CK Mapping

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

Investigation Timeline

07:35:04 Event ingested by SOC365 Engine
07:35:09 EmilyAI triage started — correlation enrichment
07:35:17 EmilyAI confidence: 86% — escalated to human analyst
07:35:33 Alert assigned to analyst: Anika Patel
07:36:17 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00255 4h ago Data Exfiltration Attempt Informational Escalated WS-PC-002
ALR-00477 7h ago Rogue DHCP Server Informational Open WS-PC-002
ALR-00466 10h ago Unauthorised USB Device Low Investigating WS-PC-002
ALR-00430 12h ago DecoyPulse Honeypot Triggered Informational Investigating WS-PC-002
ALR-00227 14h ago Certificate Anomaly Informational Open SW-CORE-01