If you care enough about privacy issues to be a regular reader of this blog, you probably know that one of the Big Changes under GDPR will be the introduction of “accountability” as a legal obligation, i.e. it will now be a requirement that a data controller is able to demonstrate its compliance with the principles relating to processing of personal data set out in Article 5 of the GDPR. You may even have started thinking about what this means for your organisation: how are you going to get your development teams to adopt privacy by design and default? What are you doing about data minimisation? Do you apply appropriate levels of encryption to your personal data? In our ever-more digitally driven world, it’s easy to get caught up in the sophisticated stuff, but a recent UK ICO decision reminds us that accountability is about the simple stuff as well. Which brings us to filing cabinets.