This isn't hacking at all; this is copying the entire file system. Making a duplicate of all the data, so you can sort through it as you want.
Plug phone into computer, drag and drop files, and unplug. No hacking or cracking needed.
And it happens on a phone that's supposedly protected by a PIN to keep it "locked" from anyone using it. Don't even try to enter a PIN, just plug it in!
Let’s think of it as Unauthorized access, then.
Same as if you were called into your Commanding Officers office, and while he took a phone call, you saw a folder titled CONFIDENTIAL or SECRET, and you open it and peek while his back is turned.
It isn’t yours. It’s against the law. Basically, it is stealing. It is malicious.