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Failed MFA Challenge

High Investigating
ALR-00121 · 2026-04-09T23:49:51Z

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-00121
Timestamp
2026-04-09T23:49:51Z
Severity
High
Status
Investigating
Detection Source
EmilyAI Triage
Assigned Analyst
Emma Richardson

Endpoint Information

Hostname
WS-PC-002
User Account
j.smith
Source IP
45.2.148.25
Destination IP
10.1.174.179
Origin Country
RO Romania

MITRE ATT&CK Mapping

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

Investigation Timeline

23:49:51 Event ingested by SOC365 Engine
23:49:56 EmilyAI triage started — correlation enrichment
23:50:03 EmilyAI confidence: 94% — escalated to human analyst
23:50:20 Alert assigned to analyst: Emma Richardson
23:51:47 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00140 3h ago Phishing Email Blocked Critical Open WS-PC-002
ALR-00212 5h ago Kerberoasting Attempt Low False Positive WS-PC-002
ALR-00299 10h ago Ransomware Behaviour Detected Low Investigating WS-PC-002
ALR-00110 11h ago Shadow IT Discovery Low Investigating WS-PC-002
ALR-00093 11h ago Unusual Outbound Traffic High Open WS-PC-002