BW Screens in extranet

We are in the process of starting to implement reporting applications for external users. SAP BI already has most of the reports/screens we need... but there is a serious concern on security. IT thinks that if we presented the screens to extranet users, we automatically open up the entire SAP BI system for potential hacking. Is there a convincing way to put only the end results (the screens with the query results) to the extranet?. the queries filter the BI database so that only the relevant data suited/authorized to the external user are transmitted to the screens-if only the screen sat in the extranet, then only the user relevant data are accessible. I hope i was able to explain what we want
We have SAP BW 7.
In any event, any suggestion would be most welcome...
Best regards,
Huba

If you have as much as possible bullet-proof authorization concept in place this concern should not be an issue.
Notice that reporting user (in your case = extranet user) has only exposure to business data in BW's infoproviders. Such a user is accessing the data by MDX (in case of BEx) or by BICS (in case of portal) interface. This should guarantee no access to technical data (metadata) in SAP's BW backend.
See following links for details:
[Security Guide for SAP NetWeaver BI|http://help.sap.com/saphelp_nw70ehp2/helpdata/en/1c/1368a5a588ff4a8bedc4039c03c40f/frameset.htm]
[Running an Enterprise Portal: Security Aspects|http://help.sap.com/saphelp_nw70ehp2/helpdata/en/14/c8864242283150e10000000a1550b0/frameset.htm]

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- the file is uploaded to the literature module, and assigned to that customer's category : The files can't be uploaded to the literature from the front end of the site. Literatures can be created from the backend only. The file uploaded via webform, is attached to the case and not to the user. However, you can use webapps, allow file upload and it will be associated with the user.
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