Verizon Communications Inc., AT&T Inc. and Sprint Corp. pledged to stop sharing customer locations with two data brokers after at least one company revealed individuals’ whereabouts without their consent.

Verizon said it would wind down data-sharing agreements with LocationSmart and Zumigo Inc., which buy the location data from major U.S. carriers and allow other businesses to access the information for everything from marketing nearby shops to preventing credit-card fraud.

“We will not enter into new location aggregation arrangements unless and until we are comfortable that we can adequately protect our customers’ location data,” Verizon privacy chief Karen Zacharia wrote in a June 15 letter to Sen. Ron Wyden, D-Ore., who wrote all four national wireless operators last month asking them about their privacy practices.

In a statement Tuesday, AT&T said it “will be ending our work with aggregators for these services as soon as practical in a way that preserves important, potential lifesaving services like emergency roadside assistance.” Sprint “suspended all services with LocationSmart” last month and “is beginning the process of terminating its current contracts with data aggregators to whom we provide location data.”

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Verizon, AT&T, Sprint to stop sharing users’ locations with data brokers

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