[Yosemitest]

What do you experts suggest?
I've found Ads Spy (http://www.bleepingcomputer.com/files/adsspy.php)

" a tool used to list, view or delete Alternate Data Streams (ADS) on Windows 2000/XP with NTFS file systems.
ADS is a way of storing meta-information for files without actually storing the information in the file it belongs to, carried over from early MacOS compatibility from Windows NT4.
Recently browser hijackers began using this technique to store hidden information on the system,
and even store trojan executable files in ADS streams of random files on the system.
Use with caution. "

[discostu]

By and large you don’t. If your file is legit and non-hacked it won’t be using any bad ADS, if it isn’t you’re already screwed.

[kingu]

Nothing in ADS streams is critical to the functioning of Windows. It may be critical to some programs.

On the whole, however, it’s a worry about something that doesn’t affect you. I think the last ‘in the wild’ ADS bug was 2004? Somewhere around there. Too hard for the script kiddies to use, and required adaptive programming as what might work on one version wouldn’t work on another.