There's no SSL in NBStore or in the gateway and it is not necessary to have SSL on to use the store with PayPal or any hosted payment gateway.
However if you are running IIS and your site is running under SSL, Microsoft have this information bulletin with a section on disabling SSL 3:
https://technet.microsoft.com/en-us/library/security/3009008.aspx
Put your domain in here to see if it's running SSL3:
https://www.poodlescan.com/
REgards
ROb
However if you are running IIS and your site is running under SSL, Microsoft have this information bulletin with a section on disabling SSL 3:
https://technet.microsoft.com/en-us/library/security/3009008.aspx
Put your domain in here to see if it's running SSL3:
https://www.poodlescan.com/
REgards
ROb