What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.

At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.

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.

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    Someone was trying to run credit cards through our form to hack it.

    Asked by habitatjackson on March 03, 2016 at 01:08 PM


    over the last couple days our form was being used to run different credit cards every minute. They all had the same name. none of them went through but our processing company said we should contact you and there should be a way that we can block them. 

    Thanks for any info. 


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    JotForm Support

    Answered by david on March 03, 2016 at 02:27 PM

    Unfortunately, we cannot block someone from accessing your form.  However, you can add in unique submissions in order to limit their ability to submit the form:


    This would, however, limit other users to a single submission as well.