Can your forms be made hacker-proof with security - Ray

All forms created in Jotform are running on SSL by default. Please check this article: All-Forms-are-Now-Secure-by-Default-The-SSL-Limits-on-Free-Accounts-are-Lifted

The forms and submissions are transmitted securely with a 256 bit high-grade encryption, which means that data is encrypted during the transmission and cannot be interrupted by anyone else. We have an SSL certificate that uses SHA256 with RSA encryption https://www.ssllabs.com/ssltest/analyze.html?d=secure.jotform.com 

We are also Safe Harbor Certified: Announcing-JotForm-s-Safe-Harbor-Certification

As an added layer of security, you may also encrypt your forms, according to this article: Introducing-Encrypted-Forms-The-Ultimate-in-Online-Form-Security. Just keep in mind that once you encrypt your forms, only the private key you generated and downloaded will be able to decipher it (we can't decrypt it on our end). To have a better idea on how this works, please take your time reading this guide Encrypted-Forms-and-How-to-Use-Them 

If you want your form user to know that their data will be sent securely, you can add enable security certificate seal in your form. Here is a guide which you can refer:http://www.jotform.com/help/131-Enabling-Security-Certificate-Seal-on-Secure-Forms

Hope this answered your question. In case you need more help, don't hesitate to ask.