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Failed MFA Challenge

Low Investigating
ALR-00058 · 2026-05-21T00:57:23Z

Description

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

Alert Metadata

Alert ID
ALR-00058
Timestamp
2026-05-21T00:57:23Z
Severity
Low
Status
Investigating
Detection Source
EmilyAI Triage
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
SRV-SQL-01
User Account
j.smith
Source IP
103.240.216.222
Destination IP
10.0.10.75
Origin Country
RU Russia

MITRE ATT&CK Mapping

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

Investigation Timeline

00:57:23 Event ingested by SOC365 Engine
00:57:28 EmilyAI triage started — correlation enrichment
00:57:35 EmilyAI confidence: 94% — escalated to human analyst
00:57:54 Alert assigned to analyst: EmilyAI (auto)
00:59:27 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00469 2h ago Failed MFA Challenge Medium Investigating SRV-BACKUP-01
ALR-00438 3h ago Failed MFA Challenge Low False Positive WS-PC-006
ALR-00053 6h ago Failed MFA Challenge High Open WS-PC-001
ALR-00474 6h ago Privilege Escalation Attempt Low Open SRV-SQL-01
ALR-00008 8h ago Failed MFA Challenge Medium Investigating WS-PC-003