Payment card details of 5,000 also potentially affected.
Transport for London has admitted that some customer names and personal details have been accessed in the recent cybersecurity incident.
In a statement, TfL said it is still investigating the incident alongside the National Crime Agency and the National Cyber Security Centre.
It said: “Although there has been very little impact on our customers so far, the situation is evolving and our investigations have identified that certain customer data has been accessed. This includes some customer names and contact details, including email addresses and home addresses where provided.”
Financial Details
It also acknowledged that some Oyster card refund data may have been accessed, which This could include bank account numbers and sort codes for around 5,000 customers. “If you are affected, we will contact you directly as soon as possible as a precautionary measure, and will offer you support and guidance,” it said.
Also, staff continue to have limited access to systems, and TfL confirmed that it is “undertaking an all-staff IT identity check.”
“We are sorry for the inconvenience this incident may cause and thank you for your patience,” TfL said.
Written by
Dan Raywood is a B2B journalist with 25 years of experience, including covering cybersecurity for the past 17 years. He has extensively covered topics from Advanced Persistent Threats and nation-state hackers to major data breaches and regulatory changes.
He has spoken at events including 44CON, Infosecurity Europe, RANT Forum, BSides Scotland, Steelcon and the National Cyber Security Show, and served as editor of SC Media UK, Infosecurity Magazine and IT Security Guru. He was also an analyst with 451 Research and a product marketing lead at Tenable.
