How did my entire email account end up on the internet for the whold world to see? If not you, who does know?

The dropdown on the address bar shows my account,not temporary addresses.

How did my entire email account end up on the internet for the whold world to see? If not you, who does know?
First of all, can you be more specific, second, try and contact yahoo, serious/severe things should be sent directly to Yahoo Customer Care. It seems as if you have Yahoo Mail Plus, because of this you will be helped with more care at Yahoo Customer Care, so try and contact them.
Reply:You can probably ask "Jeevs" for help. But,If it doein't work,Don't know wadda tell ya bud.