headers->set('X-Content-Type-Options', 'nosniff'); $response->headers->set('X-Frame-Options', 'DENY'); $response->headers->set('Referrer-Policy', 'strict-origin-when-cross-origin'); $response->headers->set( 'Content-Security-Policy', "default-src 'none'; frame-ancestors 'none'" ); if ($request->secure()) { $response->headers->set('Strict-Transport-Security', 'max-age=31536000; includeSubDomains'); } return $response; } }