"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."
- Assistant US Attorney Serrin Turner
If you think this was about European legal system, you are mistaken. If Americans were hacking European servers without due process involving European authorities, this was probably highly illegal here.
Silk Road, SkyECC, EncroChat, TorMail+Freedom Hosting.
What do they all have in common?
Their servers were found or their encryption were broken under mysterious circumstances involving classified "techniques". In 3 out 4 cases malware was sent from the services to their users once taken over.
All were hosted in the EU, even stranger, all of them had servers hosted by OVH. Although SR was not directly hosted by OVH Ross Ulbricht had a vnc server (virtual desktop) there which he apparently used to administrate the SR main server and on another OVH server he had a deadmanswitch and his will.
In a sense this is the counterpart to the survival bias. But in this case we only know where the taken down services were hosted, we don't know where the survivors are being hosted.
All this has serious Crypto AG vibes. Back then it was: trust us, we are from Switzerland, we are neutral....
Read carefully the sections related to the encrypted containers and the OVH servers and tell me your opinion: https://www.justice.gov/d9/press-releases/attachments/2019/0...
The term cryptanalysis is very, very broad, it could be anything.
The Freedom Hosting operator was in the process of moving his servers away from OVH, and they somehow found the last server remaining at OVH.