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Failed MFA Challenge

Low Open
ALR-00052 · 2026-05-24T11:59:57Z

Description

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

Alert Metadata

Alert ID
ALR-00052
Timestamp
2026-05-24T11:59:57Z
Severity
Low
Status
Open
Detection Source
Network IDS
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
VM-DEV-01
User Account
h.roberts
Source IP
103.31.216.193
Destination IP
10.0.49.103
Origin Country
NL Netherlands

MITRE ATT&CK Mapping

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

Investigation Timeline

11:59:57 Event ingested by SOC365 Engine
12:00:01 EmilyAI triage started — correlation enrichment
12:00:04 EmilyAI confidence: 88% — escalated to human analyst
12:00:19 Alert assigned to analyst: EmilyAI (auto)
12:01:56 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00469 2h ago Failed MFA Challenge Medium Investigating SRV-BACKUP-01
ALR-00438 3h ago Failed MFA Challenge Low False Positive WS-PC-006
ALR-00053 6h ago Failed MFA Challenge High Open WS-PC-001
ALR-00008 8h ago Failed MFA Challenge Medium Investigating WS-PC-003
ALR-00114 9h ago Insider Threat Indicator Informational Resolved VM-DEV-01