Who was targeted in the recent Transport for London cyber attack?

Transport for London's systems were the target of a recent alleged cyber attack by two teenagers.

What was the alleged objective of the hackers targeting TfL?

The hackers allegedly aimed to install ransomware on TfL's systems.

How much did the cyber attack on TfL reportedly cost?

The cyber attack on Transport for London reportedly resulted in losses of £39 million.

Home / Crime and Justice / Teen Hackers Target TfL Systems, Costing Millions

Teen Hackers Target TfL Systems, Costing Millions

21 Nov, 2025

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Summary

Two teenagers are accused of a sophisticated cyber attack on TfL.
The alleged attack aimed to install ransomware, causing major disruption.
Transport for London reportedly suffered £39 million in losses.

Teen Hackers Target TfL Systems, Costing Millions

Two teenagers, aged 18 and 19, stand accused of conducting a highly sophisticated cyber attack against Transport for London (TfL). The alleged incident, which occurred between August 31 and September 3 last year, aimed to install ransomware, prosecutors told Westminster Magistrates' Court. TfL experienced substantial disruption, with live Tube arrival information and online journey history becoming unavailable.

The attack prevented TfL from processing payments on Oyster and contactless apps and registering new Oyster cards to customer accounts. Prosecutors estimate the total loss to TfL as a result of the cyber incident to be £39 million. The accused deny the charges, which include conspiring to commit unauthorized acts against computer systems.

The trial is set for June 8 next year, with a further hearing scheduled for February 13. This case highlights the growing threat from cyber criminals, with the National Crime Agency noting an increase in attacks from individuals in the UK and other English-speaking countries.