Two men, Thalha Jubair and Owen Flowers, pleaded guilty under the UK Computer Misuse Act for their roles in the 2024 cyberattack on Transport for London (TfL), an intrusion investigators linked to the Scattered Spider cybercrime ecosystem. Authorities said the attackers accessed TfL’s network between 31 August and 3 September 2024, disrupting Oyster refund processing, temporarily affecting children’s and young people’s photocard applications, and forcing all 28,000 employees to reset passwords in person after trust in internal identity systems was lost. The breach is reported to have affected about 10 million customers and caused losses and recovery costs estimated between £29 million and £39 million.
The National Crime Agency, City of London Police, British Transport Police, and regional officers said a lengthy investigation produced digital evidence including screenshots showing connectivity to TfL infrastructure, videos of system access during the intrusion, Telegram communications, and activity on an online collaboration platform. Investigators also alleged that Flowers was linked to intrusions involving U.S. healthcare organizations including SSM Health and Sutter Health. Both defendants remain in custody and are due to be sentenced in July 2026, as officials cite the case as a warning about the operational impact of cyberattacks on critical infrastructure and the growing role of young, English-speaking offenders in serious cybercrime.

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The defendants were scheduled for sentencing in July 2026, with reporting citing hearings on 15 and 16 July 2026. One source summarized the sentencing as set for July 16.
In 2025, National Crime Agency and City of London Police investigators arrested the suspects in connection with the TfL intrusion. Authorities said they seized devices and recovered evidence including screenshots of TfL access, videos of system access, and Telegram and collaboration-platform communications.
Two young men, Thalha Jubair and Owen Flowers, pleaded guilty in London under the UK Computer Misuse Act for their roles in the 2024 cyberattack on Transport for London. Authorities linked them to the Scattered Spider ecosystem and said the attack affected millions of customers and caused major financial losses.
Shortly before their trials were due to begin, Thalha Jubair and Owen Flowers reportedly changed their pleas to guilty over offenses tied to the TfL cyberattack. Reporting said the case concerned a major incident that caused months of disruption and tens of millions of pounds in losses.
The National Crime Agency said two men were arrested at their home addresses on 16 September 2024 in a joint investigation with the City of London Police into the TfL cyberattack. Investigators seized multiple digital devices, including a laptop with a screenshot showing connectivity to TfL infrastructure, videos appearing to show access to TfL systems, and evidence of Telegram and collaborative-workspace communications.
The National Crime Agency said evidence recovered during Owen Flowers’ arrest indicated intrusions affecting SSM Health Care Corporation and Sutter Health in the United States. This introduced two additional victim organizations beyond Transport for London.
Transport for London's network was intruded between 31 August and 3 September 2024. The breach disrupted Oyster refund processing and related customer services and ultimately forced all 28,000 employees to reset passwords in person.
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