New technique detects tampering or forgery of a PDF document

Researchers from the University of Pretoria presented a new technique for detecting tampering in PDF documents by analyzing the file’s page objects. The technique employs a prototype that can detect changes to a PDF document, such as changes made to the text, images, or metadata. Prototype flow With the PDF format being used as a formal means of communication in multiple industries, it has become a good target for criminals who wish to affect contracts …