Acuity AutoRedact - A Blog for data protection officers and experts

Beyond the Black Box: Identifying Hidden Metadata and OCR Layers in Subject Access Requests

Andrew Walls

Published on: 03/03/2026

Learn why traditional PDF "black boxes" fail ICO standards. This guide for UK DPOs explores the dangers of metadata leaks and hidden OCR layers in SAR responses, providing a checklist for irreversible, defensible data redaction.