HTTP Observatory Report: www.who.int Score Rule Description -20 content-security-policy Content Security Policy (CSP) implemented unsafely. -5 subresource-integrity Subresource Integrity (SRI) not implemented, but all external scripts are loaded over HTTPS. 0 x-content-type-options X-Content-Type-Options header set to "nosniff". 0 cross-origin-resource-sharing Public content is visible via cross-origin resource sharing (CORS) Access-Control-Allow-Origin header. 0 redirection Initial redirection is to HTTPS on same host, final destination is HTTPS. 0 contribute Contribute.json isn't required on websites that don't belong to Mozilla. 0 strict-transport-security HTTP Strict Transport Security (HSTS) header set to a minimum of six months (15768000). 0 x-xss-protection Deprecated X-XSS-Protection header set to "1; mode=block". 0 referrer-policy Referrer-Policy header set to "no-referrer-when-downgrade". 5 cookies All cookies use the Secure flag, session cookies use the HttpOnly flag, and cross-origin restrictions are in place via the SameSite flag. 5 x-frame-options X-Frame-Options (XFO) implemented via the CSP frame-ancestors directive. Score: 75 Grade: B Full Report Url: https://observatory.mozilla.org/analyze.html?host=www.who.int