SSE Symantec Endpoint Protection 12.1 (August 2011) SSE+ Symantec Endpoint Protection 12.1 (August 2011) STS Symantec Endpoint Protection 12.1 SSE Symantec Backup Exec 2012 STS Symantec Data Loss Prevention 11.5 SSE+ Symantec Backup Exec 2012 STS Symantec Backup Exec 2012