Apple Online Store Security Flaw Exposed PINs of T-Mobile Customers

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This is a great explainer from Mac Rumors on what happened with T-Mobile and AT&T’s data leak:

Accessing the T-Mobile PINs on Apple’s website involved a brute force attack where a hacker used software to input multiple different numeric combinations to guess the proper one.

The article goes on to say that Asurion had a similar issue that exposed some AT&T customers, too.