Microsoft urged Windows Vista users to download a new security tool that automatically disables suspicious or malicious “gadgets”, small applications that can display date, time or RSS feeds. Since gadgets are written in HTML and various scripts they can be dangerous or malicious. Windows Sidebar Protection, just 1MB large, prevent a malicious gadgets from installing, and if it’s installed, to block the gadget. Windows Sidebar Protection can be downloaded from Windows Update site. This update is optional, but depending on what settings have been selected in Automatic Updates, it may be downloaded and installed without any additional user interaction.