Before you shutdown your PC and head for the LAN this weekend, it would be a good idea to:
* Unshare anything you don't want to be shared.
* Disable any media streaming services for the same reason.
* Make sure you have a good password on any active accounts, including the Administrator account (if you have it active).
* Update all windows security updates.
* Update your anti-virus.
* Update your firewall and have it enabled.
* Update all your games, including booting up Steam and letting it auto-update everything.