The 'Exploit.HTML.Iframe.FileDownload' is the report about an
HTML formatted document, that contains a code that refers to
Internet Explorer IFrame vulnerability.
This vulnerability allows an malicious HTML document, such as
email message, to execute automatically when the document is
viewed using Internet Explorer. It also affects email clients
that use Internet Explorer to view HTML formatted email messages,
such as Outlook and Outlook Express.
Microsoft has more information about this issue available at
their Security Bulletin MS01-20, available at: