All the CTA plugins come from the different vendors, so you would get the plugin from Symantec directly. Typically, you
install CTA, and then install the Symantec AV product, which should automatically put the correct plugins in your /plugins directory under your CTA installation.
I think as of now, the latest release of CTA agent is 1.0.55. Symantec AV 10 is going to be supported on CTA 2.0 and you should be able to find under \SymSentry\Symantec_Client_Security_Posture_Plug-in directory on the CD you have received
from Symantec.
