
T-Mobile is headquartered in nearby Bellevue, Washington. It also reported that the Seattle office of the FBI is investigating. The Journal reported that it remains unclear whether Binns was working alone or with others. He declined to say whether he was paid to carry it out or if he'd sold any of the stolen data. Binns, who moved to Turkey a few years ago, called T-Mobile's security "awful" and said he'd committed the hack in part to get attention. 26 an interview with John Binns, a 21-year-old American, who claimed responsibility for the hack. The Wall Street Journal published on Aug. Who's to blame?Īs with all cyberattacks, figuring out who did it can be tricky. T-Mobile says there's no indication any consumer financial data, such as credit card or other payment information, was compromised. In some cases, IMEIs and IMSIs, which identify devices and accounts, were taken. The information stolen included consumer names, addresses, Social Security numbers and dates of birth, along with driver's licenses and other identification. 16, affected about 40 million people, but it later raised the total to more than 54 million people. The company initially said the attack, which it confirmed on Aug. T-Mobile says cybercriminals compromised its systems and stole the personal information of current, former and prospective customers. Here's what we know about the giant cyberattack so far: What happened?

"To say we are disappointed and frustrated that this happened is an understatement," Sievert wrote in a statement, adding that keeping customer data safe is a "top priority." He apologized for the hack and said the company had hired Mandiant, a cybersecurity company, and KPMG, a consultancy, to shore up its cyber defenses.

On Friday, T-Mobile CEO Mike Sievert said the company's investigation into the breach was "substantially complete," though it continues to coordinate with law enforcement.
