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Failed MFA Challenge

Low False Positive
ALR-00271 · 2026-04-06T01:22:18Z

Description

Multiple failed MFA challenges for user 'system' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. DLP Module locked account.

Alert Metadata

Alert ID
ALR-00271
Timestamp
2026-04-06T01:22:18Z
Severity
Low
Status
False Positive
Detection Source
DLP Module
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
WS-LAP-011
User Account
system
Source IP
185.89.220.9
Destination IP
10.3.119.253
Origin Country
NL Netherlands

MITRE ATT&CK Mapping

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

Investigation Timeline

01:22:18 Event ingested by SOC365 Engine
01:22:20 EmilyAI triage started — correlation enrichment
01:22:23 EmilyAI confidence: 91% — escalated to human analyst
01:22:33 Alert assigned to analyst: EmilyAI (auto)
01:23:29 Investigation started — querying SIEM and threat intelligence
01:30:45 Containment action taken — endpoint isolated
01:35:08 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00398 28m ago Shadow IT Discovery Critical Investigating WS-LAP-011
ALR-00144 2h ago Ransomware Behaviour Detected Medium Investigating WS-LAP-011
ALR-00114 2h ago Certificate Anomaly Medium Investigating WS-LAP-011
ALR-00007 3h ago Failed MFA Challenge Low Investigating SRV-BACKUP-01
ALR-00086 5h ago Failed MFA Challenge Informational Investigating SRV-WEB-01