I have 3 yahoo email accounts. I posted what's wrong with my email before. It was as follows:
"Hi everyone, I use yahoo email and every time I sign in with the right password and ID, it doesn't show my mailbox. Instead, it prompts me for my password again and again. The only way I managed to sign in is by re-enter "mail.yahoo.com" into the address bar. Then it leads right to my mailbox. Why is this happening? Does this mean my email is being hijacked by someone else? Thanks for your help"

Now I'm having the same problem with my other yahoo account. A girl who was once my friend said her cousin is in the IT industry and he can teach her how to hack into yahoo accounts (ie, obtain their password). . There's no that lock showing at the right of the taskbar, which is present in secure emails. At the time, I said this is unsavory to do, which probably offended her. But now I wish I had listened, as it would save me from worry and confusion.