I don't get how this is surprising to so many. He broke US law and they charged him. He hosted at least part of the site in the US, accepted money from a US undercover agent for advertising, profited in part from US based users[0]. They filed a criminal complaint and are requesting his extradition through an extradition treaty which the US has with most countries [1].
This case actually appears to be pretty above board. IMO the only thing he has going for him at this point is the fact that he is in Poland. He least has (even if small) a chance to not be sent to the US. Other countries will just throw your ass on a plane[2].
[0] - https://www.justice.gov/usao-ndil/file/877591/download
[1] - https://en.wikipedia.org/wiki/List_of_United_States_extradit...
Other than that i can only repeat:
> Let's say i sell candy with the profile of Kim Jong-un online, so that would justify North Korea to hunt me down in other countries and take me back under their jurisdiction? Gladly that's not how it works.
The treaty involving Turkey: http://www.state.gov/documents/organization/71600.pdf
His physical servers were actually hosted in Montreal (which might as well be in the US I suppose)..
The reason the US is involved is because KAT had, at some point, a bit of hosting in the US.
(I agree that it's weird that the US feels like they have jurisdiction here.)
Let's say i sell candy with the profile of Kim Jong-un online, based on your answer that would justify North Korea to hunt me down in other countries and take me back under their jurisdiction? Gladly that's not how it works.
2) Selling candy with profile of the Dearest Leader is not recognized as a crime in most countries by treaties they've signed. Copyright crime is in many countries, hence it's extradition-possible.
2b) Copyright crime isn't a capital offense, so "but he might be executed" is not a bar to extradition here. Most countries would view lese majeste in Best Korea as a likely capital offense and wouldn't extradite on that basis alone.
3) Dude wasn't a citizen of the country where he was caught. Non-citizens have substantially inferior rights in most countries, particularly in this kind of matter.
4) Ukraine isn't in EU.
5) Because it's the ultimate factor here, it bears repeating: the US Government has essentially unlimited power globally. It is restricted primarily by its own policies, and by secondarily realpolitik concerns. Only in extremely few places is its power actually checked by another actor (Russia, China, and in some contexts, the EU, and in other contexts, Iran and North Korea).
Also i really don't get how the U.S. is involved in this at all. Did poland/ukraine specifically allow the U.S. to catch a tax evader? I mean seriously, how is this legal? Why can the U.S. hunt foreigners in forgeign countries?
Edit:// Seems he hosted in the US once. I take my accusations back (mostly), what a stupid mistake to make.