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