HTTPS-only transport
Secure restricts a cookie to secure transport. SameSite=None also requires Secure in modern browsers.
Website security
The checker keeps cookie contents out of results and inspects only names and attributes that affect browser handling.
Result
What to review
Secure restricts a cookie to secure transport. SameSite=None also requires Secure in modern browsers.
HttpOnly can keep a server-managed session cookie out of document.cookie and reduce the impact of some XSS paths.
Lax and Strict reduce when cookies accompany cross-site requests. The right value depends on login/payment/integration flows.
Cookie prefixes impose additional browser rules when supported and can make intended scope easier to audit.