Alert request on number of failed logins in a period of time

I would like to create a login failure alert that triggers if a login results in x number of failures in a period of time, say 5 minutes.  Does anyone know how to do that or if it needs to be a feature request?   For example, if someone tries to connect with JSmith and types the wrong password more than 5 times in 5 minutes.  I don't need them to be locked out but I need to be alerted. 

Thanks,

Bill