Have suspicions about what goes on on your own computer when you are away? Think someone might be cheating? Do you often see that the history has been deleted out of the browser? Maybe you just want to keep tabs on what your kids are looking at when you aren’t right there watching.
Ok hacking wifi is as simple as compiling a linux application or simple ./exploit, if you intend to hack your neighbors wifi it is good to get to know who they are, where they are, what they do and know just how smart they are. There is a ton of things you can do with ettercap, the plugins are great.