In a statement issued on Friday, Mike Sievert, CEO of T-Mobile, said that while the company’s investigation into the incident was “substantially complete,” he could not share too many technical details due to the criminal investigation conducted by law enforcement. He did, however, share a high-level summary of the attack.
“What we can share is that, in simplest terms, the bad actor leveraged their knowledge of technical systems, along with specialized tools and capabilities, to gain access to our testing environments and then used brute force attacks and other methods to make their way into other IT servers that included customer data,” he said. “In short, this individual’s intent was to break in and steal data, and they succeeded.”
