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Failed MFA Challenge

Informational Open
ALR-00309 · 2026-07-07T20:39:27Z

Description

Multiple failed MFA challenges for user 'p.thomas' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. Cloud Connector locked account.

Alert Metadata

Alert ID
ALR-00309
Timestamp
2026-07-07T20:39:27Z
Severity
Informational
Status
Open
Detection Source
Cloud Connector
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
WS-LAP-012
User Account
p.thomas
Source IP
103.124.216.156
Destination IP
10.2.152.167
Origin Country
BR Brazil

MITRE ATT&CK Mapping

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

Investigation Timeline

20:39:27 Event ingested by SOC365 Engine
20:39:28 EmilyAI triage started — correlation enrichment
20:39:40 EmilyAI confidence: 81% — escalated to human analyst
20:39:54 Alert assigned to analyst: EmilyAI (auto)
20:42:20 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00365 56m ago Lateral Movement Detected Low Escalated WS-LAP-012
ALR-00474 1h ago Failed MFA Challenge Medium Resolved WS-LAP-012
ALR-00228 2h ago Unusual Outbound Traffic Low Resolved WS-LAP-012
ALR-00267 11h ago Failed MFA Challenge Low Resolved SRV-MAIL-01
ALR-00374 16h ago Failed MFA Challenge Informational Resolved WS-PC-006