Security Essentials Screensaver is a screensaver that scans your hard drive for viruses while your computer is inactive.
There are two screensaver modes: one with graphics and a progress bar (the normal screensaver), and another that's simpler (the one that ends with NG - no graphics).
Another great feature of this application is that it also updates its virus database when the screensaver is active.
Whenever you leave your computer for a while, Security Essentials Screensaver takes advantage of the downtime to protect the health of your hard drive.
To install the screensaver, unzip the file and right-click on the one you want to install. Then select the Install option from the context menu.
Android 3.0 or higher required