English: data protection by design 
Welsh: diogelu data o'r cychwyn 
Subject: Cyfraith
Welsh definition: Companies/organisations are encouraged to implement technical and organisational measures, at the earliest stages of the design of the processing operations, in such a way that  safeguards privacy and data protection principles right from the start
Notes: Mewn perthynas â'r Rheoliad Cyffredinol ar Ddiogelu Data