The controller's legitimate interests: Which of the following is a recognized lawful basis under GDPR?
Legitimate interests, balanced against the data subject's rights, is a recognized GDPR lawful basis; availability, commercial value, and feasibility are not.
The question
Before training an AI model on customer personal data, a controller must identify a valid GDPR lawful basis for the processing. Which of the following is a recognized lawful basis under GDPR?
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- The ready availability of the data within a purchased third-party commercial dataset.Plausible but wrong: that data can be obtained is not a lawful basis; the controller still needs a valid Article 6 ground to process it.
- The controller's legitimate interests, weighed against the data subject's rights and freedoms. ✓Correct: legitimate interests, subject to a balancing test against the data subject's rights, is one of the six recognized GDPR lawful bases.
- The significant commercial value the trained model is expected to generate for the firm.Plausible but wrong: commercial value is a business motive, not a recognized lawful basis for processing personal data.
- The technical feasibility of extracting and then processing the personal data at very large scale.Plausible but wrong: technical feasibility says nothing about lawfulness; a valid Article 6 basis is still required.
The trap
Treating the ability to obtain data, or its business value, as if it were a lawful basis for processing. How to remember it
Legitimate interests, balanced against the data subject's rights, is a recognized GDPR lawful basis; availability, commercial value, and feasibility are not.
How many of these would you get right?
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