2022 March 7, Cory Doctorow, “Safegraph follows people into abortion clinics and then sells the data”, inPluralistic[1]:
Last week, Motherboard's Joseph Cox laid down $160 with Safegraph, a digitaladtech/surveillance company, and got back the location trails of everyone who'd visited 600 Planned Parenthood locations. Safegraph claimed that this data was "anonymized." This is a lie. It's really, really easy to "re-identify" location data.
