The European Commission Article 29 Data Protection Working Party provides a set of criteria to...

It is useful to use small groups because it is not possible to discover the identity of an individual from a small group of individuals.

Datasets that includes individuals occupations as well as demographic information could never be linked to publicly available profiles.

Delete particular types of data to prevent identification of an individual. This is better than masking data.

Anonymity is protected when it is only possible to analyse sizable 'clusters' of individuals who cannot be distinguished from one another based on their attributes.

Use Social Media data because people have already shared their information and do not care about anonymity.