how can I see if our submissions are secure?

Hi,

Here is our guide to using SSL based submissions:

http://www.jotform.com/help/63-How-can-I-receive-SSL-Submissions

You can add a security seal that will only show up if you are using a secure form:

http://www.jotform.com/help/131-Enabling-Security-Certificate-Seal-on-Secure-Forms

Let us know if you have any further questions and we will be happy to help.