It’s a good idea to close all your browser windows because that forces all of your online sessions to end or timeout. Closing your browser window or tabs can also free up system resources becuase multiple open browser tabs can impact your memory and CPU usage. If your browsing experience or computer seems slow, make sure you don’t have multiple browser windows or tabs open. Closing your browser window is also good practice because you likely use your computer to log into banking and other personal sites. If you get up for a moment and walk away from your device with a tab still open to your bank account, someone could access it and steal your personal information.