I am using a .NET application, in which there is a feature to upload files (.doc .xls) onto the server. How do I ensure that the end user is uploading only permitted file type(s) & not files containing any malicious code which can lead to the compromise of the server? Please suggest security measures that should be taken to avoid any such unwanted upload.

 

 

 

Regards

 

Usman

 

 

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