Hackers have managed to deface or delist many popular YouTube videos, including the highly popular 'Despacito' by Fonsi and Yankeee. Some videos have entirely disappeared while some had their titles changed. The affected videos were uploaded to the artists' YouTube Vevo accounts.
https://www.notebookcheck.net/Despacito-and-other-popular-music-videos-defaced-and-delisted-by-YouTube-hackers.296796.0.html