http://zqktlwk5ilgohy63eyrptyb4mc76bunfmxcnstkmveyjnskxkpq3b5yd.onion/wiki/Intrusive_Surveillance
This sucks, and will often leave you without computer equipment for the better part of a year . There are limits on scope of warrants, but the courts have proved to err on the side of The Man. Of course, it is always advisable to practice good Kung Foo so that he's never able to trace you in the first place, but luck favors the prepared.