
T-Mobile's August 2021 Breach: 40 Million Records, John Binns, and the Fifth Incident in Four Years
T-Mobile disclosed a breach affecting ~40M former/prospective customers, 7.8M current postpaid, and 850K prepaid — SSNs, DOBs, driver's license data exposed. The fifth breach in four years. Mike Sievert's response and the pattern regulators are watching.









