SSE PGP Encryption Platform SSE PGP File Encryption SSE Symantec Endpoint Protection 12.1 (August 2011) SSE+ Symantec Endpoint Encryption 8.0 SSE+ Symantec Endpoint Protection 12.1 (August 2011) SSE Symantec Protection Suite Small Business Edition and Enterprise Edition (October 2012) SSE Symantec Endpoint Protection Small Business Edition (April 2014) SSE Symantec Endpoint Protection 12.1 (September 2014)