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Personal information—including Social Security numbers—from about 73 million AT&T customers was leaked on the dark web earlier this month, the company said Saturday, though the source of the data is still under investigation, as it’s not known whether the leak came from within the company or one of its vendors. The ...

AT&T is one of a handful of American cellphone providers complying with controversial geofence warrants. (Photo Illustration by Tim Boyle/Getty Images)Getty Images The Department of Justice has been forcing telecoms providers like AT&T and T-Mobile to provide phone information on all customers who were in the vicini...