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