This is an ongoing issue with Blizzard's security. A few years back, I got an email that my account had been disabled for using some hack to do with gold. At the time, I had not logged into or been subscribed to WoW for at least two years. When I called Blizzard's support to get the problem cleared up, they insisted that I had either given my password to someone or that a keylogger had captured it. When I asked to speak to a supervisor, told them that it had to be a security breach on their end, since I hadn't even had WoW installed on my pc for years and I never gave out this password (which was unique) to anyone, they still refused to accept responsibility or look into the matter.