4.
The logs referred to in paragraphs 1 and 2 of this Article shall be used only to check the admissibility of the request, monitor the lawfulness of data processing and to ensure data integrity and security. The logs shall be protected by appropriate measures against unauthorised access. They shall be deleted one year after the retention period referred to in Article 54 has expired, if they are not required for monitoring procedures which have already begun. The European Data Protection Supervisor and the competent supervisory authorities responsible for monitoring the lawfulness of the data processing and data integrity and security shall have access to the logs at their request for the purpose of fulfilling their duties. The authority responsible for checking the admissibility of the request shall also have access to the logs for that purpose. Other than for such purposes, personal data shall be erased in all national and Europol files after a period of one month, unless those data are required for the purposes of the specific ongoing criminal investigation for which they were requested by a Member State or by Europol. Only logs containing non-personal data may be used for the monitoring and evaluation referred to in Article 92.
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Source: EUR-Lex (Cellar) · retrieved 2026-11-14 · Text as adopted (Official Journal); later amendments are not incorporated in this text.