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Failed MFA Challenge

Critical Escalated
ALR-00305 · 2026-10-11T14:34:04Z

Description

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

Alert Metadata

Alert ID
ALR-00305
Timestamp
2026-10-11T14:34:04Z
Severity
Critical
Status
Escalated
Detection Source
EmilyAI Triage
Assigned Analyst
Emma Richardson

Endpoint Information

Hostname
SW-CORE-01
User Account
n.clark
Source IP
91.30.195.107
Destination IP
10.2.127.245
Origin Country
VN Vietnam

MITRE ATT&CK Mapping

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

Investigation Timeline

14:34:04 Event ingested by SOC365 Engine
14:34:09 EmilyAI triage started — correlation enrichment
14:34:13 EmilyAI confidence: 98% — escalated to human analyst
14:34:38 Alert assigned to analyst: Emma Richardson
14:35:27 Investigation started — querying SIEM and threat intelligence
14:43:52 Containment action taken — endpoint isolated
14:48:46 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00125 3h ago Ransomware Behaviour Detected Informational False Positive SW-CORE-01
ALR-00239 4h ago Failed MFA Challenge Low Investigating WS-PC-004
ALR-00258 4h ago Certificate Anomaly Medium Open SW-CORE-01
ALR-00348 5h ago Credential Stuffing Attempt Low Escalated SW-CORE-01
ALR-00332 11h ago DLP Policy Violation High Escalated SW-CORE-01