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Failed MFA Challenge

Medium Open
ALR-00498 · 2026-05-24T14:36:11Z

Description

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

Alert Metadata

Alert ID
ALR-00498
Timestamp
2026-05-24T14:36:11Z
Severity
Medium
Status
Open
Detection Source
Cloud Connector
Assigned Analyst
Marcus Webb

Endpoint Information

Hostname
FW-EDGE-01
User Account
e.evans
Source IP
185.99.220.96
Destination IP
10.3.33.221
Origin Country
US United States

MITRE ATT&CK Mapping

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

Investigation Timeline

14:36:11 Event ingested by SOC365 Engine
14:36:15 EmilyAI triage started — correlation enrichment
14:36:22 EmilyAI confidence: 97% — escalated to human analyst
14:36:34 Alert assigned to analyst: Marcus Webb
14:38:51 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00460 1h ago Suspicious PowerShell Execution Medium Resolved FW-EDGE-01
ALR-00219 3h ago Lateral Movement Detected Medium False Positive FW-EDGE-01
ALR-00156 12h ago Ransomware Behaviour Detected High Open FW-EDGE-01
ALR-00301 19h ago Failed MFA Challenge High Escalated AP-WIFI-03
ALR-00312 20h ago Failed MFA Challenge Medium Open WS-PC-004