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Failed MFA Challenge

Medium Escalated
ALR-00394 · 2026-10-07T03:07:19Z

Description

Multiple failed MFA challenges for user 'm.taylor' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. EmilyAI Triage locked account.

Alert Metadata

Alert ID
ALR-00394
Timestamp
2026-10-07T03:07:19Z
Severity
Medium
Status
Escalated
Detection Source
EmilyAI Triage
Assigned Analyst
Marcus Webb

Endpoint Information

Hostname
SRV-WEB-01
User Account
m.taylor
Source IP
91.18.195.19
Destination IP
10.3.100.164
Origin Country
FR France

MITRE ATT&CK Mapping

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

Investigation Timeline

03:07:19 Event ingested by SOC365 Engine
03:07:21 EmilyAI triage started — correlation enrichment
03:07:31 EmilyAI confidence: 98% — escalated to human analyst
03:08:00 Alert assigned to analyst: Marcus Webb
03:08:33 Investigation started — querying SIEM and threat intelligence
03:12:34 Containment action taken — endpoint isolated
03:22:26 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00102 5h ago Data Exfiltration Attempt Informational Open SRV-WEB-01
ALR-00355 13h ago Failed MFA Challenge Low False Positive WS-LAP-011
ALR-00426 14h ago Lateral Movement Detected Low False Positive SRV-WEB-01
ALR-00463 17h ago Phishing Email Blocked High Escalated SRV-WEB-01
ALR-00169 22h ago Brute Force SSH Medium Open SRV-WEB-01