A job advertisement which has appeared on Microsoft's careers website suggests that the company may be considering moving to a proprietary disc format for its next console, in an effort to make piracy on the device more difficult. According to the ad, Microsoft's Xbox team is seeking an engineer "to manage the design and development of the Xbox Game Disc for the next generation Xbox console," with the job description going on to mention anti-piracy as the first in a list of key factors for the new game disc specification. Although it's possible that the role will simply involve devising a copy protection mechanism for games on existing DVD media, similar to that used by the current generation Xbox and the PS2, the description of the role hints strongly at the company developing a more proprietary format.