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Failed MFA Challenge

Medium Open
ALR-00038 · 2026-07-06T04:38:09Z

Description

Multiple failed MFA challenges for user 'n.clark' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. Dark Web Monitor locked account.

Alert Metadata

Alert ID
ALR-00038
Timestamp
2026-07-06T04:38:09Z
Severity
Medium
Status
Open
Detection Source
Dark Web Monitor
Assigned Analyst
Marcus Webb

Endpoint Information

Hostname
WS-PC-001
User Account
n.clark
Source IP
103.196.216.11
Destination IP
10.1.186.215
Origin Country
FR France

MITRE ATT&CK Mapping

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

Investigation Timeline

04:38:09 Event ingested by SOC365 Engine
04:38:10 EmilyAI triage started — correlation enrichment
04:38:16 EmilyAI confidence: 91% — escalated to human analyst
04:38:53 Alert assigned to analyst: Marcus Webb
04:38:56 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00108 4h ago Failed MFA Challenge Medium Resolved WS-LAP-011
ALR-00042 5h ago Failed MFA Challenge Informational Open VM-DEV-01
ALR-00214 9h ago Kerberoasting Attempt Medium Escalated WS-PC-001
ALR-00204 16h ago Failed MFA Challenge Medium Escalated WS-PC-001
ALR-00224 1d ago Shadow IT Discovery Informational Investigating WS-PC-001