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Failed MFA Challenge

Informational False Positive
ALR-00020 · 2026-10-06T23:33:46Z

Description

Multiple failed MFA challenges for user 's.jones' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. Endpoint Agent locked account.

Alert Metadata

Alert ID
ALR-00020
Timestamp
2026-10-06T23:33:46Z
Severity
Informational
Status
False Positive
Detection Source
Endpoint Agent
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
WS-LAP-012
User Account
s.jones
Source IP
185.74.220.200
Destination IP
10.0.76.121
Origin Country
VN Vietnam

MITRE ATT&CK Mapping

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

Investigation Timeline

23:33:46 Event ingested by SOC365 Engine
23:33:48 EmilyAI triage started — correlation enrichment
23:33:59 EmilyAI confidence: 78% — escalated to human analyst
23:34:18 Alert assigned to analyst: EmilyAI (auto)
23:34:46 Investigation started — querying SIEM and threat intelligence
23:41:45 Containment action taken — endpoint isolated
23:45:23 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00331 1h ago Failed MFA Challenge Informational Investigating WS-LAP-011
ALR-00182 2h ago Failed MFA Challenge Medium Resolved WS-PC-004
ALR-00460 3h ago Privilege Escalation Attempt Medium Open WS-LAP-012
ALR-00422 4h ago Ransomware Behaviour Detected Medium Investigating WS-LAP-012
ALR-00397 8h ago Failed MFA Challenge High Investigating SRV-DC-01