Historically, strong data anonymization requires substantial domain expertise
and custom design for the given data set and use case. Diffix is an
anonymization framework designed to make strong data anonymization available to
non-experts. This paper describes Diffix Elm, a version of Diffix that is very
easy to use at the expense of query features. We describe Diffix Elm, and show
that it provides strong anonymity based on the General Data Protection
Regulation (GDPR) criteria.