I have just tryed logging back into my account online, as i have not played since the summer.

My password had been changed and characters, games and other items have been bought on my account. i have checked my email address and a lot of things have tried to been changed.

What can i do it looks like my game keys have been comprimised and personal information
(Saved in files on my computer which have been comprimised due to a virus)

Thanks for your help