The government says https://ia600603.us.archive.org/21/items/gov.uscourts.nysd.4...
>In any event, even if the FBI had somehow “hacked” into the SR Server in order to identify its IP address, such an investigative measure would not have run afoul of the Fourth Amendment. Because the SR Server was located outside the United States, the Fourth Amendment would not have required a warrant to search the server, whether for its IP address or otherwise. See United States v. Vilar, 729 F.3d 62, 86 (2d Cir. 2013) (Fourth Amendment warrant requirement does not apply extraterritorially); In re Terrorist Bombings of U.S. Embassies in East Africa, 552 F.3d 157, 167 (2d Cir. 2008) (same). At most, any search of the SR Server needed only to be “reasonable” – that is, justified by “legitimate governmental interests.” Vilar, 729 F.3d at 86. Given that the SR Server was hosting a blatantly criminal website, it would have been reasonable for the FBI to “hack” into it in order to search it, as any such “hack” would simply have constituted a search of foreign property known to contain criminal evidence, for which a warrant was not necessary.
which seems reasonable.