What can a third party do with personal data received through a Data Act request?
Under the Data Act, a third party may use received data only for purposes agreed with the user, and Article 6 includes prohibitions such as using the data to develop a competing connected product and sharing it with a Digital Markets Act gatekeeper. Where the received data is personal data, the third party must also satisfy GDPR controller or processor obligations for its own processing.
Before sending data to a third party, the data holder should confirm the user's instruction, identify the receiving entity, record the agreed purpose, restrict further use, and handle any GDPR transfer or recipient information duties. If the user is not the data subject, the lawful-basis analysis becomes decisive.
- Record the third party's identity, purpose, data categories, delivery method, and restrictions.
- Do not send personal data to a third party on the user's instruction unless the GDPR basis and role allocation are clear.
- Keep a narrower non-personal-data delivery option available when the personal-data part cannot lawfully be shared.
Commission explanation of users sharing data with third parties and the exclusion for DMA gatekeepers.
Questions 31 and 35 explain third-party transfer rights and third-party use limits under Chapter II.