Hello Andrew,
Thank you for posting in the ASP.NET newsgroup.
From your description, I understand you're developing an ASP.NET web
application which will let the user upload and download(and view) some word
documents. Currently you're wondering how to properly perform anti-virus
protection on those word documents downloaded by the client users, correct?
Based on my experience, as for ASP.NET web application, it is web page
based, so after the server-side application flush the word document( or
other binary content) out, the control is completely passed to the client
machine(web browser) and our server-side code can not do any thing further
upon the outputed document. Therefore, to provide anti-virus protection,
the most reasonable and doable means is use anti-virus component to perform
virus scan upon the word document(checking macro virus attack) before flush
it to client response stream. You can find that most web mail system such
as Hotmail, Yahoo... is using virus scan component to verify email
attachments' security before let the client user download them. As far as
I know, those famous anti-virus software vendor like Macfee, Trend ...
provide such components
Please feel free to post here if you have any other concerns or questions
on this.
Thanks & Regards,
Steven Cheng
Microsoft MSDN Online Support Lead
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