AI and the GDPR: using artificial intelligence without exposing your data

As soon as an AI tool processes personal data, the GDPR applies. The good news: a few simple rules cover most business uses.

When does the GDPR apply to AI?

The General Data Protection Regulation (opens in a new tab) applies to any processing of data about an identifiable person. Pasting a customer email into a chat assistant, summarising a CV or analysing named reviews all count as processing.

The AI Act adds to the GDPR rather than replacing it. Data protection authorities such as the ICO publish guidance on AI (opens in a new tab) that explains these duties.

Five questions to ask

  • What is the legal basis: contract, legitimate interest, consent?
  • Have the people concerned been informed?
  • Is the AI provider a processor with an Article 28 compliant contract?
  • Does the data leave the European Union, and with what safeguards?
  • Is the data used to train the provider’s model?

Reduce risk at the source

The best personal data is the data you never send. Pseudonymisation replaces names, addresses and numbers before sending: that is what our LexPrivacy software does, as shown in our work.

For sensitive data, self-hosted AI avoids sending anything to a third party. The European Data Protection Board (opens in a new tab) stresses that a model’s anonymity cannot be assumed; it must be demonstrated.

Train your teams

Most leaks come from improvised use. Hands-on training teaches people what they can share with AI and what they must keep. It is also an Article 4 AI Act requirement, explained in our article on AI literacy.

Frequently asked questions

Can we use ChatGPT with customer data?

Only with a business plan whose contract excludes training on your data, a clear legal basis and proper information for the people concerned. For sensitive data, an in-house solution is safer.

Do we need a DPIA?

A data protection impact assessment is mandatory when processing is likely to result in a high risk, for example with health data or automated evaluation. Your supervisory authority publishes the list of cases.

Further reading

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