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Failed MFA Challenge

Low Escalated
ALR-00433 · 2026-10-09T21:52:10Z

Description

Multiple failed MFA challenges for user 'system' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. SOC365 Engine locked account.

Alert Metadata

Alert ID
ALR-00433
Timestamp
2026-10-09T21:52:10Z
Severity
Low
Status
Escalated
Detection Source
SOC365 Engine
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
AP-WIFI-03
User Account
system
Source IP
91.109.195.87
Destination IP
10.1.123.171
Origin Country
NL Netherlands

MITRE ATT&CK Mapping

Tactic
Credential Access
Technique
T1621
Reference
attack.mitre.org/techniques/T1621

Investigation Timeline

21:52:10 Event ingested by SOC365 Engine
21:52:11 EmilyAI triage started — correlation enrichment
21:52:15 EmilyAI confidence: 78% — escalated to human analyst
21:52:33 Alert assigned to analyst: EmilyAI (auto)
21:53:56 Investigation started — querying SIEM and threat intelligence
21:57:46 Containment action taken — endpoint isolated
22:09:22 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00306 5h ago Privilege Escalation Attempt Low False Positive AP-WIFI-03
ALR-00395 9h ago Failed MFA Challenge Medium Resolved VM-DEV-01
ALR-00453 9h ago Failed MFA Challenge Medium Investigating WS-PC-003
ALR-00058 9h ago Failed MFA Challenge High Open AP-WIFI-03
ALR-00341 11h ago Certificate Anomaly Medium Open AP-WIFI-03