Remove USB Autorun Automatically or Manually
Autorun.inf in USB flash drive has long been used in such a way to infect computers, yet there are still many antivirus programs that ignore its existence. Your installed antivirus will likely to block the attack executed from autorun.inf, but the autorun.inf in the USB pen drive will most likely be untouched. It means the source of the attack will stay alive and will attack again when the USB flash drive is re-connected. Thus, to prevent infection from autorun.inf, you should remove autorun using a tool like Autorun Eater.
Autorun Eater monitors your system in real time and, depending on your preference, it will automatically remove autorun.inf or ask you what it should do when an autorun.inf is detected. Instead of removing the detected autorun.inf permanently, the program will move the file to a safe backup in case of a false positive. All in all, this is a good alternative if you want to have an easy-to-use autorun remover. However, you can consider about using USB Anti Autorun if you prefer to disable USB autorun.
Viruses, worms, trojans and the likes do not only infect computer through downloaded files, but also from USB flash drives. Once a flash drive containing worm connected to a computer, the worm will replicate itself as many as it can, eating up your harddisk space and decreasing computer performance. Instead of disabling the USB autorun feature, this freeware USB Firewall alerts you whenever a malicious program tries to launch itself from USB drive using autorun.inf file. 
Autorun is different from autoplay. Where is the difference? When you get a dialog box asking what you want Windows to do after you insert an USB flash drive, it’s called autoplay. On the other hand, what autorun does is automatically launching executable file instructed by the commands listed in autorun.inf file. Autorun is intended to provide a convenience where an application can launch immediately once a disc is inserted, but this feature also provides a hidden way for viruses to infect computer.
