Transport for London (TfL) Oyster photocards are still unavailable following a cyber attack
Photocards affected include those for children, students, care leavers, people aged over 60, apprentices and veterans - TfL said photocards for those aged five to 15 that may have expired since September would still be accepted if shown to staff until the end of this year.
Student and care leaver Oyster card users are advised to keep track of their fares, and TfL says it intends to refund customers for additional travel costs incurred once the issue is fixed.
https://tfl.gov.uk/help-and-contact/we-re-doing-maintenance-on-our-photocard-website
A 17-year-old boy was arrested over the hack, which also included names, emails, home addresses and Oyster refund data
https://www.bbc.co.uk/news/articles/c4gqg2elkj4o