Under Windows XP system, when users restrict the use of USB devices, the first consideration is to prohibit their automatic playback to avoid the invasion of Trojan viruses. But many times, this method is not very effective. If you are a Windows 7 user, you can control the automatic operation of USB devices from the source through its unique "permission control" technology.
So, how can we control it from the source?
Everyone should know that when a USB device is plugged into the computer host, after a while, the system will prompt that the XX device is ready for use. This process is actually the process of system identification and driver installation for the USB device. We can use the unique permission control function of Windows 7 to prohibit it from automatically identifying and installing drivers, so as to achieve the purpose of controlling the source.
Enter the "X:Windowsinf" directory (X: is the partition drive letter where Windows 7 is located), find the "usbport.PNF" and "usbstor.inf" files respectively, and then change the corresponding "group or user" Property security permissions are set to Deny. Take setting "usbstor.inf" as an example:
Right-click the "usbstor.inf" file, switch to the "Security" tab in the pop-up dialog box, and set the "Full Control" permission of the system default group or user "SYSTEM" to "Deny".
In the picture above, SYSTEM is fully controlled by default, and users can enter the setting boot window through the "Advanced" button below. No further details will be given here.
Editor's comments:
Although this method can control the self-installation of USB devices from the source, when you plug the device into the computer host, the system will "pretend to be deaf and dumb" and will not respond to your insertion. Accordingly, the author suggests that users should upgrade the permissions of their commonly used users so that they can obtain "full control" permissions to achieve workarounds.