Is it possible to circumvent read-only after a pdf has been signed?

Hi, my pdf has a signature field. In the signed event I have make all fields read-only. Is it possible for someone to come along and make them not read-only anymore? It seems the easiest way to make my document tamper-proof. Thank you.

goodprogramming wrote:
It's not the file that is set to read-only at the OS level. The signature field has an event for signed. Once that occurs I have the checkbox selected that says mark all fields as read-only. I want to be sure it is really read-only and that there is no way to make it non-read-only.
save as does not change the read onlyness of the pdf. I have tried this.
It shouldn't matter.
Making changes to the file after the signature is added will invalidate the signature. You'll know someone has been messing around if the sig is invalidated.
Even if you have a reason to do what you want, you can't. At least not without a very expensive Digital Rights Management solution plus a server to run it.

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goodprogramming wrote:
It's not the file that is set to read-only at the OS level. The signature field has an event for signed. Once that occurs I have the checkbox selected that says mark all fields as read-only. I want to be sure it is really read-only and that there is no way to make it non-read-only.
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Make all text fields read only after signing form

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Is it possible to circumvent read-only after a pdf has been signed?

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