Unsafe file extensions

According to Microsoft, "The following list contains attachments that are considered unsafe:"

  File
Extension  Description
---------  --------------------------------------------
   ADE     Microsoft Access project extension
   ADP     Microsoft Access project
   ASX     Windows Media Audio / Video
   BAS     Microsoft Visual Basic class module
   BAT     Batch file
   CHM     Compiled HTML Help file
   CMD     Microsoft Windows NT Command script
   COM     Microsoft MS-DOS program
   CPL     Control Panel extension
   CRT     Security certificate
   EXE     Program
   HLP     Help file
   HTA     HTML program
   INF     Setup Information
   INS     Internet Naming Service
   ISP     Internet Communication settings
   JS      JScript File
   JSE     JScript Encoded Script file
   LNK     Shortcut
   MDA     Microsoft Access add-in program
   MDB     Microsoft Access program
   MDE     Microsoft Access MDE database
   MDT     Microsoft Access workgroup information
   MDW     Microsoft Access workgroup information
   MDZ     Microsoft Access wizard program
   MSC     Microsoft Common Console document
   MSI     Microsoft Windows Installer package
   MSP     Microsoft Windows Installer patch
   MST     Microsoft Windows Installer transform, Microsoft Visual Test source file
   OPS     Office XP settings
   PCD     Photo CD Image, Microsoft Visual compiled script
   PIF     Shortcut to MS-DOS program
   PRF     Microsoft Outlook profile settings
   REG     Registration entries
   SCF     Windows Explorer command
   SCR     Screen saver
   SCT     Windows Script Component
   SHB     Shell Scrap object
   SHS     Shell Scrap object
   URL     Internet shortcut
   VB      VBScript file
   VBE     VBScript Encoded script file
   VBS     VBScript file
   WSC     Windows Script Component
   WSF     Windows Script file
   WSH     Windows Scripting Host Settings file