If you're looking to up the privacy across your LAN, it's time you considered thinking bigger than just a single computer.

If you want to keep Widgets enabled but clean it up a bit, open the Widgets menu, click the Settings gear in the top-right ...

By default, anyone can view your photos and videos on your Instagram account unless you are a minor, in which case your account should be private by default. However, by going to your profile, ...