Bagle.AA worm - Medium Risk (CPL and HTA extensions)
Special Note - suffix letters may not match up due to naming conventions among AV Vendors
Important consideration: CPL & HTA extensions
The CPL and HTA extensions may not be blocked in many company firewall systems. The attachment can have any of the following extension names: ·COM, ·CPL, ·EXE, ·HTA, ·SCR, ·VBS, ·ZIP
The link below is a good list for blocking email attachments based for extension types which are suseptible to viruses.
eMail Attachment Block-List