You might hear about the latest computer virus Conficker (aka Downup, Downadup and Kido. If infected it disables many system services like computer Automatic Update, normally difficult to find out), which is widely propagating through networks and USB drives. One of the main causes of virus infection is careless use of pen drives (USB sticks). Because of its auto run feature, virus can easily get in to your system. Here is a freeware zero-configuration program –Ninja designed to protect computers from virus infection through USB pen disks.

Simply download (679Kb) and run it. It sits quietly in the system tray. Whenever a USB pen disk is inserted on the computer, ninja will examine it to uncover the commonly malicious or virulent files known as “autorun.inf” and “ctfmon.exe” amongst many others.

Besides removing known virulent files, this tool will also immunize your pen disk and create a folder called autorun.inf with special protection permissions to protect your pen disk from being infected again when plugged on contaminated computers.

Ninja is fully portable, self-contained and requires no installation and works for Windows XP and Windows Vista.

If you want to run it automatically on Windows start up, right click on the Ninja icon on task bar and click on ‘Add to startup’, so that you need not run it every time you start windows.
Waiting for a pendisk to be inserted

Screenshots
getting started image

After cleaning a pendisk