Some research on interesting new work on how to prevent identification of individuals from aggregate data reports https://www.ibm.com/blogs/research/2020/06/ibm-differential-privacy-library-the-single-line-of-code-that-can-protect-your-data/ US Census is also taking the same approach https://www.census.gov/about/policies/privacy/statistical_safeguards/disclosure-avoidance-2020-census.html Maybe useful?