Two teenagers accused of being involved in hacking London Transport for computers both pleaded not guilty to computer hacking charges during a hearing at Southwark Crown Court.
Talha Jubair, 19, from East London, and Owen Flowers, 18, from Walsall in the West Midlands, spoke only to confirm their names and make statements at the brief hearing.
They are both charged with conspiracy to commit unauthorized acts against Transport for London (TfL) under the Computer Misuse Act.
In addition, Mr. Flowers is accused of attempting to hack computer systems belonging to the Californian company Sutter Health and another American company, SSM Healthcare Corporation.
Mr Jubair is also charged with failing to provide passwords for his devices.
TfL said the hack caused £39 million worth of damage and disrupted TfL services for three months in autumn 2024.
Although the transport itself was not affected, many of TfL's online services and information boards were taken offline as a result of the attack.
TfL was forced to write to thousands of customers to say there may have been unauthorized access to their personal information such as bank account numbers and sort codes.
Data including names, emails and home addresses was accessed.
Judge Christopher Hehir set a trial date for June 8 next year. The hearing is expected to last four to six weeks.
Both men remain in custody.
