why don't yahoo provide https after login similar to contained by gmail? isn't it a vulnerability ?
Answers:
https is a URI organism used to indicate a support HTTP nouns. It is syntactically very same to the http:// coordination in general used for access resources using HTTP. Using an https: URL indicates that HTTP is to be used, but beside a different evasion TCP port (443) and an more encryption/authentication level between the HTTP and TCP. This system be designed by Netscape Communications Corporation to provide authentication and encrypted communication and is widely used on the World Wide Web for security-sensitive communication such as settlement transactions and corporate logons.
http://en.wikipedia.org/wiki/https...