It was in response to the Naomi Brockwell post she did on Twitter about businesses using WiFi, Bluetooth and Location Services to track you in public locations. You can Google it directly “NBTV Advice from Defcon” or this link: https://nbtv.substack.com/p/advice-from-defcon-turn-off-bluetooth
Just wait until you get to Transunion’s site. It is a dumpster fire of consisting of the worst sign up I’ve ever seen, “Contact our social team” and "If you haven’t logged in for awhile create a new account. I could not believe how awful it was. I had to just call and do it over the phone.