1. Operational personal data shall be:

(a) processed lawfully and fairly ('lawfulness and fairness');

(b) collected for specified, explicit and legitimate purposes and not processed in a manner that is incompatible with those purposes ('purpose limitation');

(c) adequate, relevant, and not excessive in relation to the purposes for which they are processed ('data minimisation');

(d) accurate and, where necessary, kept up to date; every reasonable step must be taken to ensure that operational personal data that are inaccurate, having regard to the purposes for which they are processed, are erased or rectified without delay ('accuracy');

(e) kept in a form which permits identification of data subjects for no longer than is necessary for the purposes for which the operational personal data are processed ('storage limitation');

(f) processed in a manner that ensures appropriate security of the operational personal data, including protection against unauthorised or unlawful processing and against accidental loss, destruction or damage, using appropriate technical or organisational measures ('integrity and confidentiality').