The Linear eMerge 50 and 5000 uses a default password of eMerge for the IEIeMerge account, which makes it easier for remote attackers to obtain Video Recorder data by establishing a session to the device.
http://www.securityinfowatch.com/Executives+Columns+%2526+Features/1316527?pageNum=2
http://www.darkreading.com/blog/archives/2010/04/attacking_door.html