The 'Price Tag' hitmaker was left fuming when her website was illegally accessed on March 30, with jokers posting a rude note about her record label and the pop superstar in the news section, reported Sun online.
Jessie J has now issued an official apology on Twitter to fans who were offended by the post.
"Somebody has hacked my website...! How original! (not) we are having it sorted ASAP and my apologies for the rude message the hackers have left!," she posted on Twitter.