In order to get a proper security assessment, SpeedFactor checks if several security-related headers are present in the domain connection. See below the list of headers that are currently checked.
In addition tio these headers, we are assessing the TLS capabilities of your server. If a connection is possible using TLS 1.2 or TLS 1.3, then your site is up to standards.
Content-Security-Policy: Content Security Policy is an effective measure to protect your site from XSS attacks. By whitelisting sources of approved content, you can prevent the browser from loading malicious assets.
X-Frame-Options: X-Frame-Options tells the browser whether you want to allow your site to be framed or not. By preventing a browser from framing your site you can defend against attacks like clickjacking. Recommended value “X-Frame-Options: SAMEORIGIN”.
X-Content-Type-Options: X-Content-Type-Options stops a browser from trying to MIME-sniff the content type and forces it to stick with the declared content-type. The only valid value for this header is “X-Content-Type-Options: nosniff”.
Referrer-Policy: Referrer Policy is a new header that allows a site to control how much information the browser includes with navigations away from a document and should be set by all sites.
Strict-Transport-Security: HTTP Strict Transport Security is an excellent feature to support on your site and strengthens your implementation of TLS by getting the User Agent to enforce the use of HTTPS.