Perhaps you never heard of the psychological targeting done for political purposes through the misuse of mass data. (Cambridge Analytics)
Edit: to be clear, people in the comments have already provided many examples of situations where corporations/governing bodies have misused specific people's personal data (zoom employees watching webcams without knowledge), however I also don't think it makes sense to brush off the impact of mass data available as a result of much of the population freely giving away their personal data.
Perhaps you never heard of the psychological targeting done for political purposes through the misuse of mass data. (Cambridge Analytics)
Edit: to be clear, people in the comments have already provided many examples of situations where corporations/governing bodies have misused specific people's personal data (zoom employees watching webcams without knowledge), however I also don't think it makes sense to brush off the impact of mass data available as a result of much of the population freely giving away their personal data.