Spam in user profiles info – not recognized by Stop Spammers?

Hello, recently I have noticed that I have many, probably hundreds of fake user accounts on my website, where the only thing they did was creating an user profile with spam text including one or more links as “Biographical Info”.

Because they refrain from posting additional spam comments and spam forum posts or because these are prevented by Stop Spammers, they remain very unnoticed. But all the profile pages with their spam text exist on our site which is bad.

Can Stop Spammers examine the Biographical Info and prevent registration or prevent saving?

Also I don’t know yet how to deal with the existing spam profiles to seek & destroy them.