"Timothy McGee" (NCIS), that occasionally needs to hack something to save a life
The fact that a law enforcement agent breaks the law during the course of their duties should be cause for concern. We have the 4th amendment for a reason. You cannot make an action permissible for one person, while making it illegal for another. That sets up all kinds of trouble.
Besides, he is rarely saving lives with his actions. The hacking is usually done to catch the perpetrator after the fact as a deus ex machina to move the plot along.