A vulnerability in Trend Micro OfficeScan 11.0 and XG allows remote unauthenticated users who can access the system to download the OfficeScan encryption file.
https://success.trendmicro.com/solution/1118372
http://www.securitytracker.com/id/1039500
http://www.securityfocus.com/bid/101076
http://www.securityfocus.com/archive/1/541273/100/0/threaded