Anyone could download Cambridge researchers’ 4-million-user Facebook data set for years

A data set of more than 3 million Facebook users and a variety of their personal details collected by Cambridge researchers was available for anyone to download for some four years, New Scientist reports. It’s likely only one of many places where such huge sets of personal data collected during a period of permissive Facebook access terms have been obtainable.

The data were collected as part of a personality test, myPersonality, which, according to its own wiki (now taken down), was operational from 2007 to 2012, but new data was added as late as August of 2016. It started as a side project by the Cambridge Psychometrics Centre’s David Stillwell (now deputy director there), but graduated to a more organized research effort later. The project “has close academic links,”…

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