“We believe that each and every customer paying for your internet service has the right to determine how their personal data will be used, on an opt-in basis,” Mozilla, the Internet Society, PublicKnowledge and others said in an open letter to the CEOs of T-Mobile AT&T and Verizon.
The watchdogs specifically ask the mobile companies to avoid harnessing information about web traffic for secondary purposes, without subscribers’ opt-in consent.
The letter comes the same week it emerged that T-Mobile plans to draw on users’ web browsing and app usage for ad targeting, on an opt-out basis.