OMG, so this was YOU?
I think the case need to be investigated before upbanning the account.
Always use good password for both your email account and accounts for other websites (i.e BitcoinTalk)
3.) i check my history login on my email, whoaaaah i got it my account get hacked but the question why he didn't change my password yahoo, only change my password bitcointalk. here the screenshot from email activity (i am from indonesia not from ukraine or somewhere else).
Please follow this topic: Recovering hacked accounts or accounts with lost passwords