Not true, if wifi router is cracked attacker install ssl-proxy (also known as man in the middle) to get all stuff in clear text format.
Uh, that is not true (it's FUD at best). One of the main purposes of SSL encryption (https) is to prevent man-in-the middle attacks of that and other kinds.
Any information that leaves your computer and the remote server is encrypted. A man in the middle cannot decrypt it even if he "cracks a wifi router". If what you wrote was true, then e-commerce (internet banking, etc.) would cease to exist.