Check of the X-Content-Type header
|Check||Cross-site scripting protection is not active or configured incorrectly.|
|Description||The HTTP header X-XSS-Protection defines how built-in XSS filters in the browser are configured. A default installation can indicate an incorrect configuration.|
|Background||This Header] activates the one that is used in most current browsers (Internet Explorer, Chrome and Safari) built-in Cross-Site Scripting Protection (XSS). Protection is enabled by default, so this header is only for reactivating the filter if the user has disabled it. This header is only supported for IE 8+, Opera, Chrome and Safari.|
|Consequence||Prevents reflected XSS attacks. Easy to implement, and requires no further adjustments on the website.|
|Solution/Tips||If it was reported, that your website is probably not sufficiently protected from XSS attacks:
Code example of an .htaccess file on an Apache webserver.
# Turn on XSS prevention tools, activated by default in IE and Chrome Header set X-XSS-Protection "1; mode=block"
Here is an example of an .htaccess file which will set the Header Scanner to green. (.htaccess example)