Failed MFA Challenge

Low Open

ALR-00480 · 2026-10-05T15:08:25Z

Description

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

Alert Metadata

Alert ID: ALR-00480
Timestamp: 2026-10-05T15:08:25Z
Severity: Low
Status: Open
Detection Source: Dark Web Monitor
Assigned Analyst: EmilyAI (auto)

Endpoint Information

Hostname: AP-WIFI-03
User Account: p.thomas
Source IP: 194.141.62.235
Destination IP: 10.1.169.129
Origin Country: NG Nigeria

MITRE ATT&CK Mapping

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

Investigation Timeline

15:08:25 Event ingested by SOC365 Engine

15:08:26 EmilyAI triage started — correlation enrichment

15:08:32 EmilyAI confidence: 96% — escalated to human analyst

15:08:59 Alert assigned to analyst: EmilyAI (auto)

15:10:20 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID	Time	Alert	Severity	Status	Host
ALR-00461	1h ago	Failed MFA Challenge	Low	Resolved	WS-PC-003
ALR-00439	2h ago	Pass-the-Hash Detected	Medium	Escalated	AP-WIFI-03
ALR-00223	8h ago	Failed MFA Challenge	Informational	Resolved	WS-PC-002
ALR-00048	9h ago	Failed MFA Challenge	Medium	Open	FW-EDGE-01
ALR-00319	10h ago	Failed MFA Challenge	Informational	Escalated	SRV-DC-01