Piracy of Pornographic films is not something that is big on any countries Federal Police target list. If they stumble across pirated items on your PC while they are already in possession of it, they will prosecute accordingly.
But the major things on their list when it comes to electronic breaches in the law its things like Child Pornography, Monetary Fraud, Identity Theft, and so on that are in the red zone for them.
And with piracy in general; it is usually the film companies themself (eg. Columbia, TriStar, Universal …) who conduct the searches enlisting the help of the Government Bodies when a sting is to take place.
So really, not too many Pornographic film studios have the money and/or resources like major Hollywood film companies to track you down and bust you.
But this is just a general rule this doesnt mean that they may not have some way of finding you and your details.
Remember the safest option is to purchase your films legitimately from a reseller/distributor. But considering where we are I am sure this bit of advice will go unheard. Why buy when GayTorrents.ru has all your needs. Lol.
Alex