Content-Type header ensures that user agents correctly interpret the data being received. Without this header
being sent, the browser may misinterpret the data, leading to MIME confusion attacks. If an attacker were able
to upload files that are accessible by using a browser, they could upload files that may be interpreted as
HTML and so execute Cross-Site Scripting (XSS) attacks.
Ensure all resources return a proper
Content-Type header that matches their format. As an example,
For added protection, we recommend that all resources return the
header to disable user agents from mis-interpreting resources.