That actually depends upon what it is that you are using. If you use someone's car without permission, that is called stealing. If you use someone's movie without permission, that is called piracy. If you use someone's body without permission, that is called rape.
A person who enters by force without permission is commonly called a trespasser or an intruder.
Use of protected material without permission or an exemption in the law is called infringement.
stalking
Certainly, it is called theft.
tracking cookies
Web Proxy Server
If you are the registered owner than that is called "Theft".
It is called anarchy.
oligarchy
A network sniffer.
In order to have "auto-pay" YOU would have had to authorize it. How, then, could you say that it was "without your permission?"