Windows 7 will disable the U disk to run automatically for security

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

Automatically Run Propagation Malware Trends

To this end, the Windows 7 engineering team made two important changes to the U disk autorun feature:

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)

After 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 point 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.