A new breach involving data from nine million AT&T customers is a
fresh reminder that your mobile provider likely collects and shares a
great deal of information about where you go and what you do with your
mobile device — unless and until you affirmatively opt out of this
data collection. Here’s a primer on why you might want to do that, and
how.
Telecommunications giant AT&T disclosed this month that a breach at a
marketing vendor exposed certain account information for nine million customers. AT&T said the data exposed did not include sensitive
information, such as credit card or Social Security numbers, or
account passwords, but was limited to “Customer Proprietary Network Information” (CPNI), such as the number of lines on an account.
https://krebsonsecurity.com/2023/03/why-you-should-opt-out-of-sharing-data-with-your-mobile-provider/
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