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Certificate Anomaly

Medium Escalated
ALR-00364 · 2026-05-26T12:07:39Z

Description

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

Alert Metadata

Alert ID
ALR-00364
Timestamp
2026-05-26T12:07:39Z
Severity
Medium
Status
Escalated
Detection Source
DecoyPulse
Assigned Analyst
Anika Patel

Endpoint Information

Hostname
SRV-WEB-01
User Account
c.williams
Source IP
91.121.195.62
Destination IP
10.1.36.219
Origin Country
BR Brazil

MITRE ATT&CK Mapping

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

Investigation Timeline

12:07:39 Event ingested by SOC365 Engine
12:07:40 EmilyAI triage started — correlation enrichment
12:07:53 EmilyAI confidence: 88% — escalated to human analyst
12:08:23 Alert assigned to analyst: Anika Patel
12:10:39 Investigation started — querying SIEM and threat intelligence
12:16:51 Containment action taken — endpoint isolated
12:26:07 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00256 4h ago Privilege Escalation Attempt Low Investigating SRV-WEB-01
ALR-00219 11h ago Credential Stuffing Attempt High Investigating SRV-WEB-01
ALR-00080 14h ago Data Exfiltration Attempt Informational Resolved SRV-WEB-01
ALR-00421 15h ago Suspicious PowerShell Execution Medium Escalated SRV-WEB-01
ALR-00281 16h ago C2 Beacon Activity Low False Positive SRV-WEB-01