T-Mobile, Sprint, and AT&T Are Selling Customers’ Real-Time Location Data, And It’s Falling Into the Wrong Hands
motherboard.vice.com

Joseph Cox, for Motherboard:

In the case of the phone we tracked, six different entities had potential access to the phone’s data. T-Mobile shares location data with an aggregator called Zumigo, which shares information with Microbilt. Microbilt shared that data with a customer using its mobile phone tracking product. The bounty hunter then shared this information with a bail industry source, who shared it with Motherboard.

This is crazy. Zeynep Tufekci said it best: we are building a dystopia just to make people click on ads.