Author: Office of Data Privacy
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Revision of OC 11: a modernised data privacy framework for CERN
Following the Director-General’s approval on 17 December 2025, the revised Operational Circular No. 11, “The processing of personal data at CERN” (OC 11), entered into force on 1 February 2026. This revised Circular cancels and replaces Operational Circular No. 11 dated January 2019 and its two annexes which came into force on 1 July 2021.
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CERN celebrates Data Protection Day with ESA, EMBL and ESO
On 30 January, CERN joined forces with the European Space Agency (ESA), the European Molecular Biology Laboratory (EMBL) and the European Southern Observatory (ESO) to host the 2023 edition of Data Protection Day, which was held online. This year’s discussions focused on the theme of artificial intelligence. More than 400 attendees listened to the various

