STS Symantec Endpoint Protection 12.1 SSE+ Symantec Endpoint Protection 12.1 (September 2012) SSE+ Symantec Critical Systems Protection 5.2.9 (August 2012) SSE Symantec Critical System Protection 5.2.9 STS Symantec Technical Foundations: Security Solutions 2.0 SSE Symantec Endpoint Protection 12.1.4 SSE+ Symantec Data Center Security: Server & Server Advanced 6.0 SSE Symantec Data Center Security: Server & Server Advanced 6.5 SSE+ Symantec Advanced Threat Protection: Network 1.0