Article 5. Principles relating to processing

(1) Personal data shall be:

1. a) processed lawfully, fairly and in a transparent manner in relation to the data subject (principle of lawfulness, fairness and transparency);
2. b) collected for specified, explicit and legitimate purposes and not further processed in a manner that is incompatible with those purposes. Further processing for archiving purposes in the public interest, scientific or historical research purposes or statistical purposes shall not be considered to be incompatible with the initial purposes, in accordance with art. 54(1) (principle of purpose limitation);
3. c) adequate, relevant and limited to what is necessary in relation to the purposes for which they are processed (principle of data minimisation);
4. d) accurate and, where necessary, kept up to date. All necessary measures shall be taken to ensure that personal data that are inaccurate, having regard to the purposes for which they are processed, are erased or rectified without delay (principle of accuracy);
5. e) kept in a form which permits identification of data subjects for no longer than is necessary for the purposes for which the data are processed. Personal data may be stored for longer periods in so far as they will be processed solely for archiving purposes in the public interest, scientific or historical research purposes or statistical purposes in accordance with art. 54(1), subject to implementation of the appropriate technical and organisational measures provided for in this Law in order to safeguard the rights and freedoms of the data subject (principle of storage limitation);
6. f) processed in a manner that ensures appropriate security of the personal data, including protection against unauthorised or unlawful processing and against accidental loss, destruction or damage, using suitable technical or organisational measures (principle of integrity and confidentiality).

(2) The controller shall be responsible for compliance with paragraph (1) and shall be able to demonstrate that compliance (principle of accountability).