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Failed MFA Challenge

Informational False Positive
ALR-00347 · 2026-10-05T20:30:46Z

Description

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

Alert Metadata

Alert ID
ALR-00347
Timestamp
2026-10-05T20:30:46Z
Severity
Informational
Status
False Positive
Detection Source
DecoyPulse
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
WS-LAP-010
User Account
l.johnson
Source IP
194.196.62.99
Destination IP
10.0.160.162
Origin Country
GB United Kingdom

MITRE ATT&CK Mapping

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

Investigation Timeline

20:30:46 Event ingested by SOC365 Engine
20:30:47 EmilyAI triage started — correlation enrichment
20:30:53 EmilyAI confidence: 88% — escalated to human analyst
20:31:28 Alert assigned to analyst: EmilyAI (auto)
20:33:46 Investigation started — querying SIEM and threat intelligence
20:34:58 Containment action taken — endpoint isolated
20:49:58 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00296 2m ago Failed MFA Challenge Informational Resolved WS-LAP-012
ALR-00282 33m ago Failed MFA Challenge Informational False Positive SRV-FILE-01
ALR-00358 3h ago Brute Force SSH Low Escalated WS-LAP-010
ALR-00037 5h ago Failed MFA Challenge Informational Escalated WS-PC-006
ALR-00178 15h ago Unusual Outbound Traffic Low Escalated WS-LAP-010