On 6/18/18, Andy K <andrewkennedy...@gmail.com> wrote: > If I have TLS 1.0,1.1, and 1.2 checked off, will my browser use the most > secure version whenever it connnects?
As long as there's no man-in-the-middle - yes. see https://en.wikipedia.org/wiki/Downgrade_attack Some anti-virus products play MITM so they can check your web traffic; a browser tls check site is https://www.ssllabs.com/ssltest/viewMyClient.html In the 'probably not worth worrying about as long as you don't click through security warnings' category are https://en.wikipedia.org/wiki/DNS_cache_poisoning https://en.wikipedia.org/wiki/BGP_hijacking which can introduce a MITM. > Some sites do not work if I have only 1.1 and 1.2 ticked off. Which ones? Regards, Lee _______________________________________________ support-seamonkey mailing list support-seamonkey@lists.mozilla.org https://lists.mozilla.org/listinfo/support-seamonkey