1. Kelleher D (2014) If it’s free, you’re probably the product. TechTalk (blog), GFI Software, https://techtalk.gfi.com/if-its-free-youre-probably-the-product/
2. Hill K (2012) How target figured out a teen girl was pregnant before her father did. Forbes, Feb 16. https://www.forbes.com/sites/kashmirhill/2012/02/16/how-target-figured-out-a-teen-girl-was-pregnant-before-her-father-did
3. Davis J (2023) Feds blast ‘shadow’ operations of data brokers, revive calls for federal privacy law. SC Magazine 20 Apr 2023, from https://www.scmagazine.com/news/privacy/feds-blast-shadow-operations-data-brokers-federal-privacy-law
4. ISACA (2020) CDPSE™ review manual. ISACA, Schaumberg
5. Brooks S, Garcia M, Lefkovitz N, Lightman S, Nadeau E (2017) NISTIR 8062: an introduction to privacy engineering and risk management in federal systems, January 2017, National Institute of Standards and Technology, U.S. Department of Commerce. Reference: https://doi.org/10.6028/NIST.IR.8062