Very Bad Idea !!
Believe me machan it is a very bad idea trying to hack in to a sophisticated network such as Yahoo!

U think they'll make there system vulnerable enough to hack in with a simple software??? Use ya brains man. These ppl have very sophisticated hardware and software based anti-hacking equipment. Unless u r a very exprienced hacker dont even think about stuff like dat. But there r some ppl out there in the net who hack the given yahoo id if u pay them. And always remember they r cool enough to track ya location with ya IP address.
But some years back i can remember one of my cousins hacking these yahoo id thingy's. But when i asked now he said to me dat da laws r now very strict (Both in overseas n here). So "think twice before u jump"

. If u get caught (I HOPE U WONT) U r on a law suit against Yahoo!. So i hope u understand all the crap i told. Gud Luck.
P.S :- Try hacking some thing smaller before frying the big fish. And remember one thing nobody's gonna help u if u get caught man...
