The most watched video on YouTube was removed in an apparent hack. Luis Fonzi’s hit “Despacito” was viewed more than 5 billion times before being deleted on Tuesday.

The hackers, who call themselves Prosox and Kuroi’sh, apparently hacked videos of more than a dozen artists writing the message “Free Palestine” under a slew of videos of Taylor Swift, Shakira, Drake, Selena Gomez and Luis Fonzi.

READ MORE: “I want to undress you in kisses”: Malaysia bans racy hit “Despacito”

Prosox appeared to confirm the hack on Twitter, writing that: “This is just for fun, I just use the” youtube-change-title-video “script and write” hacked “, don’t judge me, I love youtube”.

However, in a subsequent tweet, the mysterious Prosox denied removing Despacito’s video.

The titles of many of the tracks have been replaced with the names of suspected hackers, while the cover photo of the videos shows a group of people in red coveralls and balaclavas pointing guns at the camera.

Last week, the couple appeared to claim responsibility for yet another hack: The video news site “Now This” reported on Twitter that their accounts had been hacked. Prosox claimed that its “brother” “The real kuroi” had hacked the account in just a minute.

In 2015, Kuroi’sh claimed to have hacked both Google Brazil and Google Paraguay. Techworm reports that the hacker left the message “It’s a great time to die. Hacked by Kuroi’SH! instead of the home page.

“Google Brazil has been disfigured to show the world that anything can be hacked and that we should not underestimate our security risks” Kuroi’sh told HackRead at the time.

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