Trapped in the Data-Sharing Dilemma

Social log-ins offered by large online platforms can help websites win users in the short term, but this may come at a price.

Managing passwords and user credentials for a host of websites and apps has become increasingly challenging for consumers of digital content and services. To address this annoyance, large online platforms allow unaffiliated websites to authenticate users through a shared log-in — for instance, “Log in with Facebook.” However, such log-ins are more than just a simple solution to ease user frustration. They allow the issuing platforms to track user activity across multiple unaffiliated websites and apps, while the content ...

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