„ In comparison, in the context of the European GDPR, the Article 29 Working Party[6] considered hashing to be a technique for pseudonymization that “reduces the linkability of a dataset with the original identity of a data subject” and thus “is a useful security measure,” but is “not a method of anonymisation.”[7] In other words, from the perspective of the Article 29 Working Party, while hashing might be a useful security technique, it is not sufficient to convert personal data into deidentified data.“
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