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Rule n° 207 - The server indicates each resource’s MIME type.

Indicating the MIME type of each resource allows the user's browser to retrieve correctly identified contents, and to close the door to the sending of certain dangerous contents.

#Development #Security

Goal

Reduce the risk of downloading dangerous hidden content.

Solution technique

Configure the server to address for each resource (text, image, script, etc.) the ContentType header filled with the appropriate MIME type, for example:

text/html;
application/pdf.

Moyen de contrôle

Using an HTTP headers inspection tool, check that the ContentType has the value corresponding to the type of resource.