2024 Transport for London data breach affected 10 million customers
06/03/2026 | BBC News
A cyberattack on Transport for London (TfL) carried out between August and September 2024 resulted in the theft of personal data belonging to approximately 10 million people, making it one of the largest personal data breaches in British history. While TfL initially disclosed that approximately 5000 customers were affected, a database verified by BBC News confirms the scale of the breach.
The stolen information comprises nearly 15 million lines of data, including names, email addresses, physical addresses, and telephone numbers, causing £39 million in damages and disrupting online services and information boards. TfL recently admitted to emailing 7,113,429 customers to notify them of the incident. However, it noted a low open rate of 58%, suggesting millions may be unaware that their details were compromised.
In a LinkedIn post discussing the breach, data protection expert Jon Baines notes that there is no mention of the breach on the Information Commissioner's Office (ICO) website.
Training Announcement: Freevacy offers a range of independent data protection qualifications from IAPP and BCS. Our certified courses are available at foundation and practitioner levels and cover multiple legal jurisdictions, data protection operations management, and the implementation of complex privacy solutions in technical environments. Find out more.
What is this page?
You are reading a summary article on the Privacy Newsfeed, a free resource for DPOs and other professionals with privacy or data protection responsibilities helping them stay informed of industry news all in one place. The information here is a brief snippet relating to a single piece of original content or several articles about a common topic or thread. The main contributor is listed in the top left-hand corner, just beneath the article title.
The Privacy Newsfeed monitors over 300 global publications, of which more than 6,250 summary articles have been posted to the online archive dating back to the beginning of 2020. A weekly roundup is available by email every Friday.