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Pseudonymisation techniques and best practices

This report explores further the basic notions of pseudonymisation, as well as technical solutions that can support implementation in practice.

Starting from a number of pseudonymisation scenarios, the report defines first the main actors that can be involved in the process of pseudonymisation along with their possible roles. It then analyses the different adversarial models and attacking techniques against pseudonymisation, such as brute force attack, dictionary search and guesswork. Moreover, it presents the main pseudonymisation techniques and policies available today.