Why Diff Tools Lie: Detecting Hidden File Changes with PowerShell Hash Verification

Version 1.0.0 File modification detection sounds simple until you realise that timestamps can be forged, file sizes can stay identical while content changes, and simple diff tools often miss what matters most: the actual bytes. If you work in IT security, digital forensics, compliance, or system administration, you need a way to verify file integrity that goes deeper than metadata. In this tutorial, you'll build a PowerShell script that creates cryptographic hash baselines of directories and det