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Failed MFA Challenge

Low Escalated
ALR-00436 · 2026-10-06T07:14:28Z

Description

Multiple failed MFA challenges for user 'e.evans' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. Email Gateway locked account.

Alert Metadata

Alert ID
ALR-00436
Timestamp
2026-10-06T07:14:28Z
Severity
Low
Status
Escalated
Detection Source
Email Gateway
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
WS-LAP-012
User Account
e.evans
Source IP
91.128.195.245
Destination IP
10.1.130.165
Origin Country
CN China

MITRE ATT&CK Mapping

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

Investigation Timeline

07:14:28 Event ingested by SOC365 Engine
07:14:32 EmilyAI triage started — correlation enrichment
07:14:35 EmilyAI confidence: 82% — escalated to human analyst
07:15:04 Alert assigned to analyst: EmilyAI (auto)
07:16:53 Investigation started — querying SIEM and threat intelligence
07:18:22 Containment action taken — endpoint isolated
07:25:15 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00296 2m ago Failed MFA Challenge Informational Resolved WS-LAP-012
ALR-00282 33m ago Failed MFA Challenge Informational False Positive SRV-FILE-01
ALR-00037 5h ago Failed MFA Challenge Informational Escalated WS-PC-006
ALR-00445 7h ago DecoyPulse Honeypot Triggered Medium Open WS-LAP-012
ALR-00155 9h ago Lateral Movement Detected Medium Open WS-LAP-012