I don't understand what you mean by "certs breaking".
Unless server is using TLS to authenticate the identity of the client (client certs), server has no reason to disallow old versions/ciphers.
-
-
If you are using TLS to authenticate identity (as a client does of the server), downgrade attacks are a threat to that.
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.