It is very important, when you use wireless network, to disable the "File and Printer Sharing". Other wise all the users in your wireless network may get access to your shared data.

Here I have shared the steps you need to follow to disable "File and Printer Sharing" in your Windows machine.

• Click the "Start" button, then go to "Control Panel," then click "Network Connections."
• Right-click the "Local Area Connections" icon and select "Properties".
• In "General" tab un-check the "File and Printer Sharing for Microsoft Network" option.
• Press "OK" .