episode 4: Digitale Verfolgung
https://www.dailytelegraph.com.au/technology/smartphones/accc-investigating-oracle-research-showing-google-users-android-phone-plan-data-to-spy/news-story/3ca0cdaa3cc6992d134355bd0b7fcf40 https://www.zdnet.com/article/us-cell-carriers-selling-access-to-real-time-location-data/ https://www.nytimes.com/2018/05/12/style/who-are-my-real-friends.html