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Certificate Anomaly

Medium Investigating
ALR-00196 · 2026-10-06T00:57:21Z

Description

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

Alert Metadata

Alert ID
ALR-00196
Timestamp
2026-10-06T00:57:21Z
Severity
Medium
Status
Investigating
Detection Source
DLP Module
Assigned Analyst
Sarah Chen

Endpoint Information

Hostname
SRV-BACKUP-01
User Account
l.johnson
Source IP
45.228.148.20
Destination IP
10.2.208.181
Origin Country
UA Ukraine

MITRE ATT&CK Mapping

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

Investigation Timeline

00:57:21 Event ingested by SOC365 Engine
00:57:23 EmilyAI triage started — correlation enrichment
00:57:30 EmilyAI confidence: 94% — escalated to human analyst
00:57:45 Alert assigned to analyst: Sarah Chen
00:58:12 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00317 8m ago Suspicious PowerShell Execution Medium Investigating SRV-BACKUP-01
ALR-00410 21m ago Lateral Movement Detected Informational Escalated SRV-BACKUP-01
ALR-00456 6h ago Pass-the-Hash Detected Low Investigating SRV-BACKUP-01
ALR-00465 9h ago Data Exfiltration Attempt Critical Open SRV-BACKUP-01
ALR-00048 14h ago Certificate Anomaly High Open WS-LAP-011