For folks on IE, you can change to TLS 1.2 via tools>Internet Options then hit the “advanced” tab, scroll down to the “Security” section uncheck TLS 1.0 and check TLS 1.2 and “apply” then restart IE
Except that very few sites support TLS 1.2. Pages that use SSL either won't load or load the unencrypted version.
This particular threat is not in the wild so there's no reason to panic yet.