BTC-e AttackedHappened on July 31st, 2012A moderator of the chat at BTC-e known as βDevβ indicates that a malicious entity was able to deposit fake Liberty Reserve funds, and use them to purchase Bitcoins.
BTC-e officially confirms that their Liberty Reserve API key was compromised, leading to the falsification of funds on the exchange. Approximately 4,500 bitcoins were actually withdrawn and stolen by the attacker.