signature with fill and sign tool

[sm988]

Hi,

I've been playing around with digital signatures and the fill & sign signature feature in Acrobat Pro DC (Windows).

After you use the fill & sign tool to apply a signature, once you save the document the form fields are no longer editable but you can still move and delete the signature if you use the 'Edit Pdf' Tool.  Is there a way to lock the pdf or field so the signature is not modifiable?

Thanks