Several data violations, like the Cambridge Analytica scandal, have brought forth questions regarding how companies and governments should deal with the data entrusted to them, and they have also increased the search for the development of new technologies to preserve the privacy of companies and users.
Consequently, countries and regulators have rushed to set new compliance requirements to deal with user privacy and data collection — like the General Data Protection Regulation in Europe or the General Data Protection Law in Brazil, to name a couple. Parallel to that, there has been a new trend to seek new technologies like blockchain to solve privacy problems.