PDF Metadata: What It Reveals and How to Read It
Every PDF carries two hidden records about where it came from. Here's how to read the Info dictionary and the XMP packet, what each field means, and the disagreement that exposes tampering.
When Was This Really Made? A Field Guide to Document Time
Documents carry more clocks than people expect — and fraud usually breaks at least one. Where timestamps live, which ones lie easily, and how to read them together.