In a nutshell, infiltrators are no longer invisible. However, the fact that you are an infiltrator is invisible, the subclass does not appear on the character list, even in your own realm. (except to your ruler only, or has this been changed?)
If you do something and you are all alone in a region, then people will be able to connect the dots. You need to have plausible deniability if you want to operate in secret.
