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Failed MFA Challenge

Medium False Positive
ALR-00036 · 2026-04-06T23:53:20Z

Description

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

Alert Metadata

Alert ID
ALR-00036
Timestamp
2026-04-06T23:53:20Z
Severity
Medium
Status
False Positive
Detection Source
DLP Module
Assigned Analyst
Sarah Chen

Endpoint Information

Hostname
SRV-WEB-01
User Account
l.johnson
Source IP
45.123.148.249
Destination IP
10.0.223.248
Origin Country
RO Romania

MITRE ATT&CK Mapping

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

Investigation Timeline

23:53:20 Event ingested by SOC365 Engine
23:53:25 EmilyAI triage started — correlation enrichment
23:53:30 EmilyAI confidence: 97% — escalated to human analyst
23:53:54 Alert assigned to analyst: Sarah Chen
23:56:17 Investigation started — querying SIEM and threat intelligence
23:57:49 Containment action taken — endpoint isolated
00:12:06 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00132 5h ago Failed MFA Challenge Low Open AP-WIFI-03
ALR-00480 11h ago Failed MFA Challenge Medium Investigating WS-PC-006
ALR-00281 11h ago Failed MFA Challenge Low Open WS-LAP-012
ALR-00207 13h ago Failed MFA Challenge Low Resolved WS-PC-006
ALR-00317 16h ago Failed MFA Challenge Low Escalated WS-LAP-011