T-Mobile hacker says wireless carrier’s security “awful”

The hacker, who stole data of more than 53 million former and prospective customers of T-Mobile US Inc (TMUS.O), said the wireless carrier’s security was “awful”, the Wall Street Journal reported on Thursday.

John Binns, the 21-year-old American who took responsibility for the high-profile hack disclosed by the company last week, told the Journal that he had used an unprotected router to access personal records of customers.

T-Mobile did not immediately respond to a request for comment.

The U.S. Federal Communications Commission (FCC) said last week it would investigate the data breach, with some T-Mobile customers also suing the company for damages in Seattle federal court.