People leave a lot of accidental breadcrumbs. Consider that even what people believe to be carefully anonymized data sets can be reverse-engineered down to a s

People leave a lot of accidental breadcrumbs. Consider that even what people believe to be carefully anonymized data sets can be reverse-engineered down to a scarily specific group of people, if not all the way down to the specific person individually. [0] [1] Aside from the fact that some people have a conveniently weak definition of "anonymous", this is part of why it's worrisome to have so many people collecting and reselling browsing data and other types of user analytics, despite their repeated assertions of anonymity. It's perfectly plausible to believe that with the right shuffle of declassified data, substantial new information will become apparent. [0] https://www.cs.cornell.edu/~shmat/netflix-faq.html https://www.cs.cornell.edu/~shmat/netflix-faq.html [1] https://en.wikipedia.org/wiki/De-anonymization https://en.wikipedia.org/wiki/De-anonymization