Decentralized derivatives exchange Digitex has fallen victim to a significant data breach believed to have exposed the email addresses and possibly other information of more than 8,000 users. A former employee stole private information for more than 8,000 users, Christina Comben, who heads Digitex's communications, said Friday. The exchange confirmed that this was not an external hack but an internal security breach orchestrated by an ex-employee with a conflict of interest against the company. Digitex disclosed in a blog post in early February that a "scheming and highly manipulative ex-employee whose professional interests are now in conflict with Digitex’s success" had hijacked the exchange's Facebook account and begun publicly posting user email addresses. However, the post received little notice at the time and gave limited detail of the scale of the breach.