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If you visit 450 pages on 15 major health, education and news sites, 1121 third parties set 891772 cookies. Visiting health sites first maximizes the chance that data brokers can track you across sites.
Excellent study by @idonibrasco, @HNissenbaum et al: news.cornell.edu/stories/2020/0…
Excellent study by @idonibrasco, @HNissenbaum et al: news.cornell.edu/stories/2020/0…
Using personal identifiers stored in third-party cookies to monitor, follow and profile people across sites may have an expiration date, but it's more prevalent than ever.
I think, examining cross-context ID in this way, presented at the @FTC's #PrivacyCon today, is very useful.
I think, examining cross-context ID in this way, presented at the @FTC's #PrivacyCon today, is very useful.
Observing the same personal identifier (aka pseudonymous cookie ID) across two websites proves that both sites help a third party to recognize a user again, and thus facilitate personal data sharing.
EU data protection authorities must adopt this methodology to gather evidence.
EU data protection authorities must adopt this methodology to gather evidence.
