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Failed MFA Challenge

Medium Open
ALR-00214 · 2026-05-24T22:11:17Z

Description

Multiple failed MFA challenges for user 'e.evans' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. DecoyPulse locked account.

Alert Metadata

Alert ID
ALR-00214
Timestamp
2026-05-24T22:11:17Z
Severity
Medium
Status
Open
Detection Source
DecoyPulse
Assigned Analyst
Emma Richardson

Endpoint Information

Hostname
SRV-BACKUP-01
User Account
e.evans
Source IP
185.76.220.77
Destination IP
10.2.245.70
Origin Country
GB United Kingdom

MITRE ATT&CK Mapping

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

Investigation Timeline

22:11:17 Event ingested by SOC365 Engine
22:11:22 EmilyAI triage started — correlation enrichment
22:11:26 EmilyAI confidence: 90% — escalated to human analyst
22:11:35 Alert assigned to analyst: Emma Richardson
22:13:19 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00447 1h ago DecoyPulse Honeypot Triggered Informational False Positive SRV-BACKUP-01
ALR-00207 8h ago Pass-the-Hash Detected Medium Resolved SRV-BACKUP-01
ALR-00285 9h ago Failed MFA Challenge Medium Resolved SW-CORE-01
ALR-00289 11h ago Port Scan Detected Low False Positive SRV-BACKUP-01
ALR-00158 12h ago Credential Stuffing Attempt Medium Investigating SRV-BACKUP-01