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Failed MFA Challenge

Low Resolved
ALR-00162 · 2026-07-05T13:44:56Z

Description

Multiple failed MFA challenges for user 'n.clark' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. Attack Surface Scanner locked account.

Alert Metadata

Alert ID
ALR-00162
Timestamp
2026-07-05T13:44:56Z
Severity
Low
Status
Resolved
Detection Source
Attack Surface Scanner
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
AP-WIFI-03
User Account
n.clark
Source IP
103.117.216.51
Destination IP
10.0.25.66
Origin Country
NL Netherlands

MITRE ATT&CK Mapping

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

Investigation Timeline

13:44:56 Event ingested by SOC365 Engine
13:45:00 EmilyAI triage started — correlation enrichment
13:45:10 EmilyAI confidence: 83% — escalated to human analyst
13:45:12 Alert assigned to analyst: EmilyAI (auto)
13:47:11 Investigation started — querying SIEM and threat intelligence
13:48:10 Containment action taken — endpoint isolated
14:00:34 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00080 1h ago Failed MFA Challenge Low Resolved SW-CORE-01
ALR-00054 2h ago Privilege Escalation Attempt Informational Escalated AP-WIFI-03
ALR-00438 2h ago Insider Threat Indicator Medium False Positive AP-WIFI-03
ALR-00010 8h ago Failed MFA Challenge Informational Open WS-PC-004
ALR-00363 19h ago Failed MFA Challenge Low Investigating WS-LAP-011