The French Euromillions site has been hacked with the homepage replaced by a passage from the Koran condemning gambling as the 'devil's work'.
A hacking group calling themselves "Morrocanghosts" posted a message in Arabic and French warning people to quit gambling and consuming alcohol, both of which are forbidden in Islam.
The message insisted that people who gamble and consume alcohol were being used by the devil to "sow hatred between yourselves and turn you away from God and prayer".
"Oh you believers. Wine, games of chance, statues all augur impurity and are the work of the devil", read the message.
The note appeared yesterday morning but La Francaise des jeux (FDJ), which runs Euromillions in France, said that none of its games or any personal data were affected and that all pages hit by the hackers were in "the process of being put back up".
The Euromillions homepage was still unavailable last night and is currently redirecting visitors to the FDJ page.
France has a population of 65 million of which four million are Muslims - the largest Islamic population in western Europe.
The Euromillions lottery launched in 2004 and is now played by nine countries across western Europe: Austria, Belgium, Britain, France, Ireland, Luxembourg, Portugal, Spain and Switzerland.
More than 100 million euros are up for grabs in the Euromillions jackpot to be played on Tuesday.