Investigators say it be the latest in a string of several unsolved break-ins in the Hollywood Hills.
The home is on the south side of Sunset Plaza Drive, near the top of the Hollywood Hills. Property records indicate the home was sold to Greenspan for $2.9 million in 2004.
Greenspan is the founder of Intermix/eUniverse Inc., which started the social networking Web site MySpace in 2003.