The Transport for London cyberattack
https://www.bleepingcomputer.com/news/security/uk-arrests-teen-linked-to-transport-for-london-cyber-attack/
U.K.'s National Crime Agency says it arrested a 17-year-old teenager who is suspected of being connected to the cyberattack on Transport for London, the city's public transportation agency.
"A teenager has been arrested in Walsall by the National Crime Agency, as part of the investigation into a cyber security incident affecting Transport for London (TfL)," reads the NCA statement.