Admin authentication failure detected on firewall - Cisco ASA
This alert triggers when an administrator fails to successfully login into the firewall admin console; either via GUI or command shell.
MITRE ATT&CK Tactics
Firewall Status/Health Logs
1. Change admin/root/administrator account password
2. Login into the firewall console and review change history
3. Block IP address which requested the console access
4. Consider to disable management access from the untrust zones (best practices)