Researchers into bad #privacy practices are sometimes assimilated by offending companies, borg-style. Here's a paper on how #facebook got people's phone numbers for two-factor authentication, then turned around and used it for ad targeting: https://content.sciendo.com/downloadpdf/journals/popets/2019/1/article-p227.pdf
...and here's the adviser of that team announcing multiple grants from FB: https://mislove.org/
This happens a lot, it is no good, and we should talk about it. @zillion @lingprefix @neoncipher @aral @cwebber @doctorow @micahflee