The official Twitter and YouTube accounts for the US military’s Central Command (CENTCOM) that oversees operations in Central Asia and the Middle East were hacked on Monday by a hacker group claiming association with Islamic State militant group, also known as ISIS. The hacker group, appears to call itself “CyberCaliphate”, managed to gain access to the CENTCOM social accounts, and posted some screenshots of documents, allegedly internal CENTCOM documents. Centcom later called the hack “cybervandalism,” saying no classified information was released and none of its computer servers was breached.
Source: https://thehackernews.com/2015/01/us-central-command-social-media.html