Is MS vulnerable to this Unicode trick?

[Beauchemin, Denis]

I just read something that makes me wonder if MS can detect those Unicode names as executables?
http://norman.com/security_center/security_center_archive/2011/rtlo_unicode_hole

We’ve been blocking EXE, BAT and many other executables for a long time with MS, just based on the file name. I didn’t want to use the file command because we encouraged people to rename offending attachments before sending them.

Should I start using the file command just to be on the safe side?

Thanks!

Denis

Denis Beauchemin
Architecte Technologique - Section Infrastructure des serveurs
Service des technologies de l’information (S.T.I.)
Université de Sherbrooke