Re: [whatwg/fetch] Clarification on CORS preflight fetches for TLS client certificates (#869)

alexiade left a comment (whatwg/fetch#869)

@thw0rted . HSTS is just an HTTP response header — a policy — that says "for this domain, always use TLS (HTTPS), never fall back to plaintext, and don't let the user click through cert errors." It doesn't encrypt or authenticate anything; it just tells the browser a rule about when to insist on TLS. The thing doing the work is still TLS and mTLS is just a bilateral trust version of it. HSTS is a stickinote that the door must be locked. TLS is the lock. 

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Received on Saturday, 13 June 2026 06:41:09 UTC