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Failed MFA Challenge

Low False Positive
ALR-00396 · 2026-05-27T15:42:41Z

Description

Multiple failed MFA challenges for user 'm.taylor' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. SOC365 Engine locked account.

Alert Metadata

Alert ID
ALR-00396
Timestamp
2026-05-27T15:42:41Z
Severity
Low
Status
False Positive
Detection Source
SOC365 Engine
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
WS-LAP-010
User Account
m.taylor
Source IP
91.147.195.152
Destination IP
10.0.160.226
Origin Country
IR Iran

MITRE ATT&CK Mapping

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

Investigation Timeline

15:42:41 Event ingested by SOC365 Engine
15:42:45 EmilyAI triage started — correlation enrichment
15:42:55 EmilyAI confidence: 88% — escalated to human analyst
15:43:01 Alert assigned to analyst: EmilyAI (auto)
15:44:04 Investigation started — querying SIEM and threat intelligence
15:46:42 Containment action taken — endpoint isolated
15:57:02 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00280 1h ago Malware Signature Match Low False Positive WS-LAP-010
ALR-00020 2h ago Failed MFA Challenge Informational False Positive WS-LAP-011
ALR-00224 4h ago Failed MFA Challenge Low Investigating WS-LAP-012
ALR-00467 19h ago Lateral Movement Detected Medium Investigating WS-LAP-010
ALR-00376 20h ago Failed MFA Challenge Low Open WS-LAP-011