Hacking is an evolved form of digital piracy, and is possible only if you've been the victim of a keylogger. These cases are extremely rare.
All other account theft cases are caused not by hacking, but rather some carelessness on the player's part:
- The player voluntarily provided their login information to a friend, to a family member, or on a website, etc… As a result, someone was able to access the account.
- The player came upon a phishing site and inadvertently provided their login details to a malicious individual.