Overview

• TfL's corporate headquarters in Southwark is the main site affected by the cyber attack.
• Experts from the National Crime Agency and National Cyber Security Centre are involved in the investigation.
• Employees are advised to work from home to facilitate internal measures against the attack.
• No evidence of compromised customer data or impact on transport services has been found so far.
• The incident follows a history of cyber attacks, including a previous one linked to Russian hackers.