relevant
someone just made several purchases from my itunes account after switching my credit card for theirs; it was on a pc that has never been registered under my itunes id and ALL the computers in my house have already seen that id.
what the forget
Have you contacted iTunes about it?
My account was presumably hacked into.
Someone managed to get onto the account, despite only a few people in my immediate family knowing my password and e-mail used.
Never used it anywhere other than my own computer and my parents laptop.
They spent money out of my account on some in-app purchases for things.
I contacted iTunes and they really quickly got back in touch with me, reset my account password and whatnot, and refunded the purchases.
They were really really good and swift when I used them.