Most people have no idea that this day exists. There is no countdown, fireworks, or public holiday. There will be, however, cake in my office, which feels like a reasonable and proportionate response from a DPO.
It falls on 28 January every year, and not because of GDPR, fines, or cookie banners (we are all tired of hearing about those). It exists because of something that happened in 1981, long before smartphones, social media, cloud storage.
28th January: The Origin of Data Privacy Day
Data Privacy Day traces its roots back to 28 January 1981, a group of countries signed an agreement called Convention 108. It was the first legally binding international treaty anywhere designed to protect people when organisations collect and use their personal information.
At the time, bid old computers were still exciting and databases were growing quickly. Organisations were starting to store large amounts of information about people for the first time, and it became obvious that this could go wrong in ways that were hard to detect, and harder to fix. A few data privacy mistakes noticed were:
- Records could be inaccurate with no clear way to challenge them.
- People could be refused services without knowing why.
- Medical information could be accessed by people who had no business seeing it.
- Children’s details could be copied, reused, and shared with very little control.
Data protection did not start as red tape as it can be perceived to be. It started as harm prevention, based on the idea if you are going to hold information about people, you should not be allowed to damage them in any way.
Years later, 28th January was marked as Data Privacy Day, as a reminder of why these protections exist at all.
Common Data Privacy Risks in 2026
Fast forward to today, personal data runs almost everything. Shopping, banking, healthcare, schools, work systems, apps, loyalty cards, deliveries, smart devices and an ever-growing collection of tools that insist they are “AI-powered” all rely on it. Your information can travel across the world in seconds while you are still waiting for your kettle to boil at 7am.
When things go wrong, it could lead to corporate fraud, identity theft, stalking, discrimination, children’s data being shared, medical records landing in the wrong inbox, jobs lost and trust damaged.
That is what Data Privacy Day is actually about. Not standalone policies. Not templates. Not arguing about whether a Legitimate Interest or Consent is your marketing campaigns lawful basis.
Data Protection Mistakes Organisations Must Avoid in 2026
For organisations, Data Protection Day is also a quiet reminder that data protection was never meant to be something you “sort out once”, write down, and forget about.
Most serious incidents do not begin with hackers in dark rooms. They start with very ordinary decisions made on busy days, such as collecting more data “just in case”, not being quite sure where information is stored, giving too many people access because it is easier, assuming a supplier knows what they are doing, or skipping training because everyone is “too busy”.
The fixes are still pretty basic. Collect less. Know what you hold. Limit access properly. Take suppliers seriously. Train staff like it matters, because it does.
TEN Lessons to takeaway this Data Privacy Day
- Stop collecting data “just in case”. If you do not have a clear business purpose for it, do not collect it. Excess data increases risk, cost, and the size of any future incident.
- Know exactly what personal data you hold and where it is stored. If the answer is “in a few systems and probably some inboxes and shared drives”, you do not yet have control of it.
- Review who has access, and remove what is no longer needed. Access should be based on roles, not convenience or job titles from three years ago.
- Treat suppliers as part of your risk profile. Most serious breaches involve third parties. Check their security, contracts, and data handling practices before you share anything.
- Train staff regularly, not just at induction. People cause most incidents, usually by accident. Practical training prevents more issues than any policy document.
- Build privacy checks into everyday processes. New forms, systems, marketing activity, and AI tools should all trigger basic data protection questions before launch, not after something goes wrong.
- Plan for breaches before you have one. Know who investigates, who decides on notification, and who speaks to customers and regulators.
- Use the “front-page test”. If you would not be comfortable explaining a decision to a customer, regulator, or parent, rethink it.
- Treat data protection as ongoing operations, not annual paperwork. It should sit alongside finance, HR, IT, and risk management – not in a forgotten folder.
- Conduct regular data protection assessments. Evaluate your systems, processes, and compliance practices periodically to identify risks early and ensure continuous improvement. Request a data protection assessment.
TenIntelligence Thoughts
Data Protection Day is about remembering that there are real people behind all this data, not just systems and spreadsheets.
Good data protection is someone slowing things down, asking the awkward questions, or saying “are we sure this is a good idea?” before a small mistake turns into a big problem.
That is why the day matters.
The cake is just a bonus!

Written by
Lynsey Hanson | Global Data Protection Officer
