As in other those surrounded by the house.
Answers:
If your computer is set for shared files they can see the history and any files you add on. In some routers it is possible to set a log for sites visit. If here is logging software on your computer to be precise used for tracking approaching corporations use, they can see. Other than that probably not.
yup, they can see what pr0n you look at
Not if you've set up your key properly. Make sure you use WPA or stronger.WEP can be cracked near a remote laptop surrounded by beneath 10 minutes.
Well if you're broadcasting over an start signal, consequently yes, others can see what you've be doing and can acquire your personal information and is one of the chief cause of identity aggravated burglary.
If you hold a secured framework and someone else on your web have administrative privileges, afterwards yes, they can find out exactly what you are doing at any point.