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Failed MFA Challenge

Medium Escalated
ALR-00145 · 2026-04-10T17:57:29Z

Description

Multiple failed MFA challenges for user 'h.roberts' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. SOC365 Engine locked account.

Alert Metadata

Alert ID
ALR-00145
Timestamp
2026-04-10T17:57:29Z
Severity
Medium
Status
Escalated
Detection Source
SOC365 Engine
Assigned Analyst
Sarah Chen

Endpoint Information

Hostname
WS-PC-003
User Account
h.roberts
Source IP
185.198.220.192
Destination IP
10.0.216.89
Origin Country
NG Nigeria

MITRE ATT&CK Mapping

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

Investigation Timeline

17:57:29 Event ingested by SOC365 Engine
17:57:30 EmilyAI triage started — correlation enrichment
17:57:44 EmilyAI confidence: 94% — escalated to human analyst
17:57:54 Alert assigned to analyst: Sarah Chen
17:59:25 Investigation started — querying SIEM and threat intelligence
18:01:57 Containment action taken — endpoint isolated
18:11:13 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00007 3h ago Failed MFA Challenge Low Investigating SRV-BACKUP-01
ALR-00086 5h ago Failed MFA Challenge Informational Investigating SRV-WEB-01
ALR-00019 8h ago Privilege Escalation Attempt Informational Resolved WS-PC-003
ALR-00135 9h ago Unauthorised USB Device Informational False Positive WS-PC-003
ALR-00013 10h ago Tor Exit Node Connection Low Escalated WS-PC-003