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Certificate Anomaly

High Open
ALR-00159 · 2026-05-27T07:50:33Z

Description

TLS certificate anomaly detected on WS-LAP-011. Self-signed certificate on port 443 does not match expected corporate CA chain.

Alert Metadata

Alert ID
ALR-00159
Timestamp
2026-05-27T07:50:33Z
Severity
High
Status
Open
Detection Source
Network IDS
Assigned Analyst
Sarah Chen

Endpoint Information

Hostname
WS-LAP-011
User Account
k.brown
Source IP
194.180.62.229
Destination IP
10.0.182.20
Origin Country
CN China

MITRE ATT&CK Mapping

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

Investigation Timeline

07:50:33 Event ingested by SOC365 Engine
07:50:35 EmilyAI triage started — correlation enrichment
07:50:42 EmilyAI confidence: 85% — escalated to human analyst
07:51:13 Alert assigned to analyst: Sarah Chen
07:53:07 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00066 4h ago Certificate Anomaly Low Escalated SRV-BACKUP-01
ALR-00044 6h ago Insider Threat Indicator Informational Escalated WS-LAP-011
ALR-00398 13h ago Certificate Anomaly Low Escalated SRV-APP-01
ALR-00382 15h ago Phishing Email Blocked Medium Investigating WS-LAP-011
ALR-00383 17h ago Credential Stuffing Attempt Low Open WS-LAP-011