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Failed MFA Challenge

Critical Escalated
ALR-00498 · 2026-07-10T18:22:59Z

Description

Multiple failed MFA challenges for user 'r.davies' — 12 push notifications in 3 minutes suggesting MFA fatigue attack. Firewall locked account.

Alert Metadata

Alert ID
ALR-00498
Timestamp
2026-07-10T18:22:59Z
Severity
Critical
Status
Escalated
Detection Source
Firewall
Assigned Analyst
Anika Patel

Endpoint Information

Hostname
SRV-DC-01
User Account
r.davies
Source IP
45.150.148.99
Destination IP
10.0.144.222
Origin Country
IR Iran

MITRE ATT&CK Mapping

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

Investigation Timeline

18:22:59 Event ingested by SOC365 Engine
18:23:01 EmilyAI triage started — correlation enrichment
18:23:05 EmilyAI confidence: 91% — escalated to human analyst
18:23:28 Alert assigned to analyst: Anika Patel
18:23:59 Investigation started — querying SIEM and threat intelligence
18:32:36 Containment action taken — endpoint isolated
18:37:12 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00096 3h ago DLP Policy Violation High Open SRV-DC-01
ALR-00035 5h ago Brute Force SSH Medium Open SRV-DC-01
ALR-00389 8h ago Unauthorised USB Device Informational Resolved SRV-DC-01
ALR-00358 10h ago Failed MFA Challenge Medium Open WS-MAC-005
ALR-00077 12h ago Failed MFA Challenge Low Open SRV-MAIL-01