Three new changes in federal court rules have greatly enlarged law enforcement’s skill to hack into computers all over the world.

The Supreme Court, declared the changes, to a federal court procedure called Rule 41. This means one warrant could be issued by a judge in Virginia for computers in Illinois, Florida, California and international.

The government says the changes are small but essential to keep pace with cross border net offense and anonymizing software like Tor that conceals the actual IP address and place of computers. But civil liberties groups say the changes let grand hacking operations are conducted by authorities with little supervision, possibly jeopardizing privacy and the protection of innocent parties. They’re also dismay the changes indicate the authorities plans to hack on the computers of offense casualties—not only perpetrators.

Here’s why they contentious and a break down of the three changes.

Rule 41 regulates search warrants carried out and are requested in federal cases, including the authority magistrates must issue them. Changes can be requested by the Justice Department .

The first would let search warrants are issued by magistrate judges to hunt that is remotely —basically hack on — computers that are outside their authority if the place of the computer has been deliberately hidden through technical means. Now magistrates can just issue warrants to search and confiscate property within their court’s authority, with exceptions (for instance, property which may go out of the district before a search can be ran or property found in an US territory or embassy international). The planned change would mean that when a child or hacker pornographer uses some other proxy or Tor to hide their actual IP address and place, law enforcement wouldn’t be required to ascertain the place of the computer to get permission to hack on it.

That change is pretty clear-cut. But the second change is more complicated.