It sounds like they are tapping into information on servers and tracking back the attribution for the traffic item that catches the attention of their super-Raptor, rather than going for your home computer in situ. Search and seizure standards elsewhere do not use the same legal system we do, it is generally much easier to go for the home unit once you develop a lead to it than it would be in the US. There is some potential for problems in the US though, since legally if something is intercepted by a warrantless search overseas, and the overseas law enforcement people turn over what they have to our LEOs, our LEOs can use it under what is referred to as the "Silver Platter" and "Clean Hands" doctrines, because the rules for exclusion of evidence for unlawful searches only apply to actions by US law enforcement agencies, if they are presented with evidence (no matter how obtained) from a source not subject to US law they can run with it and use it as a basis to obtain a warrant of their own or even make a bust, if it's complete enough.
