Windows 7 will disable U disk autorun for security

        U disk is undoubtedly the most widely used portable storage device today, but unfortunately it has become a hotbed of virus spread, especially the automatic operation function makes people pay attention to it, such as the recent raging Conficker worm.

Automatically propagate malware trend graphs

For this reason, the Windows 7 engineering team made two important changes to the U disk autorun function:

1, AutoPlay (AutoPlay) no longer supports the autorun (AutoRun) function of non-optical portable media. In other words, the CD/DVD/BD drive can still play automatically, but the U disk will not work. After the system is inserted, the autorun option will not be displayed. Even if the U disk is infected with a virus, it will not be able to trick the user into executing and spreading.

Before change (note the red box)

Change

2, if the program is automatically run from external media ( Non-local disk), the dialog will give a prompt.

Before the change

After the change (note the green circle)

But there is one more point to be pointed out, that is, some intelligence The USB flash drive will display itself as a CD/DVD drive instead of a removable disk. At this time, Windows 7 can't do anything because the device type is recognized on the hardware layer.

Looks like CD drive, but U disk

The above changes have been implemented in Windows 7 RC, but not the new system patent, Windows Vista/XP will be in the future Get a similar upgrade.