The Norwegian Consumer Council has published an extensive report about how the adtech industry violates consumer privacy. At the same time, it is filing three legal complaints against six companies in this space. From a Twitter summary:
1. [thread] We are filing legal complaints against six companies based on our research, revealing systematic breaches to privacy, by shadowy #OutOfControl #adtech companies gathering & sharing heaps of personal data. https://forbrukerradet.no/out-of-control/#GDPR… #privacy
2. We observed how ten apps transmitted user data to at least 135 different third parties involved in advertising and/or behavioural profiling, exposing (yet again) a vast network of companies monetizing user data and using it for their own purposes.
3. Dating app @Grindr shared detailed user data with a large number of third parties. Data included the fact that you are using the app (clear indication of sexual orientation), IP address (personal data), Advertising ID, GPS location (very revealing), age, and gender.
From a news article:
The researchers also reported that the OkCupid app sent a user’s ethnicity and answers to personal profile questions—like “Have you used psychedelic drugs?”—to a firm that helps companies tailor marketing messages to users. The Times found that the OkCupid site had recently posted a list of more than 300 advertising and analytics “partners” with which it may share users’ information.
This is really good research exposing the inner workings of a very secretive industry.