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Failed MFA Challenge

Informational Open
ALR-00211 · 2026-04-05T21:08:37Z

Description

Multiple failed MFA challenges for user 'm.taylor' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. EmilyAI Triage locked account.

Alert Metadata

Alert ID
ALR-00211
Timestamp
2026-04-05T21:08:37Z
Severity
Informational
Status
Open
Detection Source
EmilyAI Triage
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
WS-MAC-005
User Account
m.taylor
Source IP
45.170.148.91
Destination IP
10.1.45.132
Origin Country
RU Russia

MITRE ATT&CK Mapping

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

Investigation Timeline

21:08:37 Event ingested by SOC365 Engine
21:08:41 EmilyAI triage started — correlation enrichment
21:08:44 EmilyAI confidence: 80% — escalated to human analyst
21:09:01 Alert assigned to analyst: EmilyAI (auto)
21:10:48 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00078 11h ago Failed MFA Challenge Low Resolved SRV-WEB-01
ALR-00197 11h ago DecoyPulse Honeypot Triggered Low Investigating WS-MAC-005
ALR-00438 19h ago Failed MFA Challenge Low Escalated FW-EDGE-01
ALR-00296 21h ago Failed MFA Challenge Low Investigating WS-PC-006
ALR-00023 23h ago Certificate Anomaly Medium Resolved WS-MAC-005