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Certificate Anomaly

Low False Positive
ALR-00351 · 2026-04-11T03:11:53Z

Description

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

Alert Metadata

Alert ID
ALR-00351
Timestamp
2026-04-11T03:11:53Z
Severity
Low
Status
False Positive
Detection Source
DecoyPulse
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
FW-EDGE-01
User Account
n.clark
Source IP
194.21.62.34
Destination IP
10.2.188.184
Origin Country
NG Nigeria

MITRE ATT&CK Mapping

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

Investigation Timeline

03:11:53 Event ingested by SOC365 Engine
03:11:58 EmilyAI triage started — correlation enrichment
03:12:03 EmilyAI confidence: 92% — escalated to human analyst
03:12:21 Alert assigned to analyst: EmilyAI (auto)
03:14:01 Investigation started — querying SIEM and threat intelligence
03:18:47 Containment action taken — endpoint isolated
03:24:20 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00342 14m ago Certificate Anomaly Informational Investigating SRV-DC-01
ALR-00429 1h ago Certificate Anomaly Informational Escalated FW-EDGE-01
ALR-00025 4h ago Brute Force SSH Low Resolved FW-EDGE-01
ALR-00081 5h ago Certificate Anomaly Medium Open AP-WIFI-03
ALR-00156 8h ago Suspicious Scheduled Task Informational Open FW-EDGE-01