A 17-year-old boy has been arrested in connection with the cyber security incident affecting Transport for London (TfL), the National Crime Agency (NCA) said.
TfL said that about 5,000 customers’ sort codes and bank account details could have been accessed by hackers amid an “ongoing cyber security incident”.
The NCA said the teenager was arrested in Walsall, West Midlands, on 5 September, after the cyber attack began four days earlier.
TfL said data including names, emails and home addresses had been accessed.