Lessons from the BlackBasta Ransomware Attack on Capita

Introduction When a company that manages data for millions of UK citizens falls victim to ransomware, the whole industry should pay attention to it. On 15 October 2025, the UK Information Commissioner’s Office (ICO) published a detailed 136 page report about the Capita breach. The aim of this blog is to extract actionable cybersecurity lessons from the ICO’s findings as well as open source reports…