With significant rise of malwares employing autorun.inf to execute and spread, Microsoft pushed a solution by disabling autorun registry key through Windows Update and Automatic update. Please refer all the details from this url: http://support.microsoft.com/kb/967715
Here’s an instruction to do it manually.
How to selectively disable specific Autorun features
To selectively disable specific Autorun features, you must modify the NoDriveTypeAutoRun value under the following registry key subkey:
|0×1||Disables AutoPlay on drives of unknown type|
|0×4||Disables AutoPlay on removable drives|
|0×8||Disables AutoPlay on fixed drives|
|0×10||Disables AutoPlay on network drives|
|0×20||Disables AutoPlay on CD-ROM drives|
|0×40||Disables AutoPlay on RAM disks|
|0×80||Disables AutoPlay on drives of unknown type|
|0xFF||Disables AutoPlay on all kinds of drives|
Personally, I prefer 0xFF value which disables autoplay on all kinds of drives. The draw back here is when you are installing from CD ‘coz you have to manually execute the setup instead of automatically running it. The good thing, you’ll be safe from autorun malwares!
With our daily computing activities, exchanging data through USB is just an ordinary thing we do. But, sometimes we tend to forget that autorun.inf can cause you severe problem specifically when it points to a malicious program and the rest of all unwanted perhaps destructive activities follows.
Few known prevalent worms are Brontok, Slenfbot and autorun/SillyAutorun.
Here’s useful tip’s from Joe’s Blogs – Disabling Autorun.inf