Missing Anti-clickjacking Header

Summary: The response does not include either Content-Security-Policy with ‘frame-ancestors’ directive or X-Frame-Options to protect against ‘ClickJacking’ attacks.

Solution: Modern Web browsers support the Content-Security-Policy and X-Frame-Options HTTP headers. Ensure one of them is set on all web pages returned by your site/app. If you expect the page to be framed only by pages on your server (e.g. it's part of a FRAMESET) then you'll want to use SAMEORIGIN, otherwise if you never expect the page to be framed, you should use DENY. Alternatively consider implementing Content Security Policy's "frame-ancestors" directive.

References: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Frame-Options