By exploiting private player data and stolen credit cards, certain websites and individuals sell in-game currency for real world money.

Such practices request private login data to access your account. While attached to your account, salespeople purchase in-game currency with stolen credit cards and/or payment fraud, without worrying about how the consequences may hurt you.

IMPORTANT: If you release your private logins to illicit parties, you are permanently putting not only your game, but also financial and online security into a high-risk situation, and your account may get banned.