HTTP Strict Transport Security (HSTS)

wikipedia:HTTP Strict Transport Security (HSTS) (2012) is a web security policy mechanism that helps to protect websites against protocol downgrade attacks and cookie hijacking.

Strict-Transport-Security: max-age=31536000; includeSubDomains

See also

• HTTP, HTTP client, HTTP/1.1, HTTP/2, HTTP/3, HTTPS, HSTS CSR, TLS, SSL, openSSL, WebSockets, WebRTC, ssl_certificate QUIC, HPKP, CT, List of HTTP status codes, URL redirection, Content-type:, Webhook, HTTP headers, --insecure, Axios HTTP client, HTTP cookies, HTTP ETag, Hypertext Transfer Protocol -- HTTP/1.1