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Failed MFA Challenge

High Investigating
ALR-00264 · 2026-07-05T02:10:24Z

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-00264
Timestamp
2026-07-05T02:10:24Z
Severity
High
Status
Investigating
Detection Source
Network IDS
Assigned Analyst
James Okonkwo

Endpoint Information

Hostname
WS-PC-004
User Account
k.brown
Source IP
45.176.148.26
Destination IP
10.3.230.152
Origin Country
BR Brazil

MITRE ATT&CK Mapping

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

Investigation Timeline

02:10:24 Event ingested by SOC365 Engine
02:10:25 EmilyAI triage started — correlation enrichment
02:10:30 EmilyAI confidence: 97% — escalated to human analyst
02:10:57 Alert assigned to analyst: James Okonkwo
02:12:56 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00006 10m ago Phishing Email Blocked Informational Investigating WS-PC-004
ALR-00159 20m ago Unusual Outbound Traffic High Escalated WS-PC-004
ALR-00364 1h ago Unauthorised USB Device Informational Open WS-PC-004
ALR-00446 1h ago Failed MFA Challenge Medium Open WS-PC-006
ALR-00140 4h ago Unusual Outbound Traffic Informational Investigating WS-PC-004