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Failed MFA Challenge

Informational Open
ALR-00286 · 2026-07-10T00:43:41Z

Description

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

Alert Metadata

Alert ID
ALR-00286
Timestamp
2026-07-10T00:43:41Z
Severity
Informational
Status
Open
Detection Source
Endpoint Agent
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
WS-LAP-011
User Account
k.brown
Source IP
91.194.195.110
Destination IP
10.3.213.172
Origin Country
CN China

MITRE ATT&CK Mapping

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

Investigation Timeline

00:43:41 Event ingested by SOC365 Engine
00:43:42 EmilyAI triage started — correlation enrichment
00:43:56 EmilyAI confidence: 87% — escalated to human analyst
00:44:22 Alert assigned to analyst: EmilyAI (auto)
00:46:15 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00084 59m ago Rogue DHCP Server Low Open WS-LAP-011
ALR-00446 1h ago Failed MFA Challenge Medium Open WS-PC-006
ALR-00360 9h ago Rogue DHCP Server Medium Open WS-LAP-011
ALR-00421 14h ago Privilege Escalation Attempt Informational False Positive WS-LAP-011
ALR-00004 19h ago Failed MFA Challenge Low Escalated WS-PC-006