Security researchers found vulnerabilities at AT&T, T-Mobile, and Sprint that could have exposed customer data

Security researchers found vulnerabilities at AT&T, T-Mobile, and Sprint that could have exposed customer data  The Verge T-Mobile, AT&T customer account PINs were exposed by website flaws  Engadget Multiple vulnerabilities cause compromised AT&T and T-Mobile account PINs  9to5MacFull coverage

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