I found out that somebody was using my computer while I was gone and I am planning to go away once again. I think this person just wants to go online and nothing more, but I still don’t want to be any part if that. Disabling Network Connection? I think this will be enough and you?
You can do that, but I don’t see why you should be doing this. There are much easier ways to make somebody stop using your computer for what ever reason. I think that you should just make passwords that will allow no access to your computer and when you do this, then you should not be concerned anymore what somebody might be doing while you are not present. I think that this is a much better plan then you make any physical changes to your computer. But if you insist then you can do something else and I would not recommend it because this is protection good enough for what you are asking.