SSE Symantec Data Loss Prevention Standard Edition 10.5 SSE Symantec Protection Suite Enterprise Edition for Gateway SSE Symantec Protection Suite Enterprise Edition for Servers SSE Symantec Web Gateway 5.0 SSE+ Symantec Endpoint Protection 12.1 (August 2011) STS Symantec Enterprise Vault 10.0 for Exchange SSE Symantec Backup Exec 2012 SSE+ Symantec Backup Exec 2012 SSE+ Symantec Endpoint Protection 12.1 (September 2012) SSE+ Symantec Messaging Gateway 10