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Failed MFA Challenge

Low Escalated
ALR-00438 · 2026-04-11T19:44:12Z

Description

Multiple failed MFA challenges for user 'd.walker' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. EmilyAI Triage locked account.

Alert Metadata

Alert ID
ALR-00438
Timestamp
2026-04-11T19:44:12Z
Severity
Low
Status
Escalated
Detection Source
EmilyAI Triage
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
FW-EDGE-01
User Account
d.walker
Source IP
91.241.195.141
Destination IP
10.1.31.46
Origin Country
NL Netherlands

MITRE ATT&CK Mapping

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

Investigation Timeline

19:44:12 Event ingested by SOC365 Engine
19:44:15 EmilyAI triage started — correlation enrichment
19:44:17 EmilyAI confidence: 79% — escalated to human analyst
19:44:41 Alert assigned to analyst: EmilyAI (auto)
19:45:51 Investigation started — querying SIEM and threat intelligence
19:52:58 Containment action taken — endpoint isolated
19:54:40 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00294 3h ago DecoyPulse Honeypot Triggered High Open FW-EDGE-01
ALR-00409 7h ago Rogue DHCP Server High Investigating FW-EDGE-01
ALR-00078 11h ago Failed MFA Challenge Low Resolved SRV-WEB-01
ALR-00177 12h ago Rogue DHCP Server Low Escalated FW-EDGE-01
ALR-00059 14h ago Ransomware Behaviour Detected Informational Investigating FW-EDGE-01