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Failed MFA Challenge

High Open
ALR-00111 · 2026-07-10T05:03:21Z

Description

Multiple failed MFA challenges for user 'k.brown' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. Network IDS locked account.

Alert Metadata

Alert ID
ALR-00111
Timestamp
2026-07-10T05:03:21Z
Severity
High
Status
Open
Detection Source
Network IDS
Assigned Analyst
Marcus Webb

Endpoint Information

Hostname
WS-MAC-005
User Account
k.brown
Source IP
194.186.62.54
Destination IP
10.3.70.205
Origin Country
IR Iran

MITRE ATT&CK Mapping

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

Investigation Timeline

05:03:21 Event ingested by SOC365 Engine
05:03:24 EmilyAI triage started — correlation enrichment
05:03:27 EmilyAI confidence: 92% — escalated to human analyst
05:03:56 Alert assigned to analyst: Marcus Webb
05:06:15 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00080 1h ago Failed MFA Challenge Low Resolved SW-CORE-01
ALR-00010 8h ago Failed MFA Challenge Informational Open WS-PC-004
ALR-00446 16h ago Certificate Anomaly Medium Investigating WS-MAC-005
ALR-00363 19h ago Failed MFA Challenge Low Investigating WS-LAP-011
ALR-00109 19h ago Failed MFA Challenge Low Resolved SRV-BACKUP-01