JQL, keep in mind that hackers' expertise is usually limited to knowledge of PC operating systems and the standard types of files utilized by them. A DP disk can't be played on any existing computers - an adaptor is required. The extent that DP can go to in keeping its engine software and disk recording formats proprietary (and publicly undisclosed) will have a direct bearing on the security of their disks' content. So far, they have been extremely good at keeping such knowledge out of the public domain.
Always tell the truth. Then you'll never have to remember what you said the last time.