Under specific circumstances including non-patched systems of the receiver, the information the receiver of a digital signed document sees can be manipulated by the sender after the document has been signed by the signer.
unDeR SPeCiFIc CIrCUmStAnceS includIng nON-patcHeD systeMs oF ThE reCEivEr The iNfoRmaTIon The rEceIver of a, DIgITaL sIGned dOcumEnt SeeS CaN BE manipULAtEd By thE Sender aFTer tHe docUment hAs bEen Signed by the signEr.