Did the Queensland Police hack any computers? They appear to have simply sent emails containing links. When the link was clicked, the IP address of the mail client as recorded.
From the TLA:
>> Details on how exactly this was achieved are limited, but according to a court document from another case,
>> “When a user clicked on that hyperlink, the user was advised that the user was attempting to open a video
>> file from an external website. If the user chose to open the file, a video file containing images of child pornography
>> began to play, and the FLA [foreign law enforcement agency] captured and recorded the IP address of the user accessing the file.”
So it doesn't appear that any code was inserted into the target computer. The offenders didn't follow good opsec - they clicked on a link while they were not connected to a TOR proxy.
As for jurisdiction - it appears that the server was moved to Brisbane. Again from the TLA:
>> At one point, The Love Zone server was also reportedly moved to Brisbane, giving Task Force Argos,
>> the Queensland Police Service unit that took over the site, access to every private message on the site.
If the server was located in Queensland, then Queensland court orders could legitimately apply to it. So no evidence of hacking or of extra-territoriality. Move along folks, no misconduct, just good police work.