Provide 'too many failed authentication attempts' security alert #253
Description
Is your feature request related to a problem? Please describe.
We already write a security event upon successful van failed authentication, but we do nothing we possible malicious activity that could be detected with too many failed authentication attempts.
Describe the solution you'd like
We should consider adding a configurable threshold that will track a security alert when too many failed authentications are being monitored.
Describe alternatives you've considered
This could also reflect in the HTTP response, but maybe in a later phase.