T-Mobile on the largest user location sharing abuse fine: AT&T, Verizon and Sprint did worse

The end result? Last week, the FCC announced that it has sent the so-called Notices of Apparent Liability for Forfeiture and Admonishment (NAL) to the four big US carriers, imposing a total of $209 million in fines, and T-Mobile will bear the brunt of it with $91 million.
T-Mobile vs AT&T vs Verizon vs Sprint customer location data sharing fines
Next in line when it comes to the penalty amount is AT&T with $57.3 million), then Verizon with $48.3 million, and, finally, Sprint with $12.2 million in fines. The penalty doesn't only take into account the amount of third parties that subscriber location data was shared with, but also how long did it take the carriers to react after they were notified of the problem.
All continued the practice well into last year, even though they knew much earlier that the revenue they extracted from location data aggregators could land them in trouble since the practice had become public. T-Mobile, however, ceased sharing data without adequate safeguards earlier than the rest, and intends to fight the $91 million penalty that the FCC has imposed, according to FierceWireless:
While we strongly support the FCC’s commitment to consumer protection, we fully intend to dispute the conclusions of this NAL and the associated fine. We take the privacy and security of our customers’ data very seriously. When we learned that our location aggregator program was being abused by bad actor third parties, we took quick action. We were the first wireless provider to commit to ending the program and terminated it in February 2019 after first ensuring that valid and important services were not adversely impacted.
The FCC Commissioner Geoffrey Starks, however, is having none of it, and is already gearing for a fight with T-Mobile by commenting that the $91 million penalty is not nearly enough, if anything, for the amount of damage that unauthorized sharing of subscriber location data has wreaked.
"It should be higher," he says. "I believe that T-Mobile was on notice about the problems with its location data protections back in July 2017 and that the proposed forfeiture amount should reflect that fact – the punishment should fit the crime."
"It should be higher," he says. "I believe that T-Mobile was on notice about the problems with its location data protections back in July 2017 and that the proposed forfeiture amount should reflect that fact – the punishment should fit the crime."
That puts the timeline of the drama in a whole new light, as if indeed the first investigations started rolling a few years ago, and T-Mobile was warned about the abuse of its system way back in 2017, a reaction in 2019 may have come too little too late.