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Certificate Anomaly

Informational Open
ALR-00368 · 2026-10-07T00:37:17Z

Description

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

Alert Metadata

Alert ID
ALR-00368
Timestamp
2026-10-07T00:37:17Z
Severity
Informational
Status
Open
Detection Source
Attack Surface Scanner
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
SRV-DC-01
User Account
n.clark
Source IP
45.21.148.110
Destination IP
10.0.70.45
Origin Country
GB United Kingdom

MITRE ATT&CK Mapping

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

Investigation Timeline

00:37:17 Event ingested by SOC365 Engine
00:37:18 EmilyAI triage started — correlation enrichment
00:37:29 EmilyAI confidence: 82% — escalated to human analyst
00:37:33 Alert assigned to analyst: EmilyAI (auto)
00:39:04 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00116 5h ago Rogue DHCP Server Low Open SRV-DC-01
ALR-00280 7h ago Certificate Anomaly Medium Resolved SRV-BACKUP-01
ALR-00393 10h ago Phishing Email Blocked Informational Open SRV-DC-01
ALR-00385 10h ago Certificate Anomaly Medium Escalated SRV-DC-01
ALR-00490 13h ago Certificate Anomaly High Escalated SRV-BACKUP-01