JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
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.