Researchers at the Ruhr-University Bochum in Germany have figured out three different ways to forge digital signatures in PDF documents. The fakes will be treated as genuine on 21 of 22 desktop PDF ...

Guide for validating digital signature in e-Aadhaar using Adobe Reader. Protects from tampering, ensures trustworthiness. Check 'Validity Unknown' icon, look for 'nCode Solutions CA 2014' in ...

Security researchers have found that it is possible to alter a digitally signed PDF without invalidating its signatures. To demonstrate it, they produced a fake document “refund order” of ...

Adobe Acrobat enables you to create PDF documents that are compatible with virtually every operating system and platform. PDF documents also support a wide range of security features. To send a ...

This PDF e-signing post is in collaboration with Smallpdf. When you sign up to use Smallpdf’s eSign PDF tool, you can create signatures and initials, sign documents electronically, and invite other ...