French newspaper "Le Monde" said its twitter account and publishing tool were hacked by a group called the "Syrian Electronic Army", an amorphous hacker collective that supports Syrian President Bashar al-Assad.
"The hackers managed to infiltrate our publishing tool before launching a denial of service," the newspaper said on its website.
Après le piratage de notre compte, nos équipes ont désormais repris la main. Nos excuses pour les messages frauduleux postés en notre nom.— Le Monde (@lemondefr) January 21, 2015
Le Monde sent out a tweet saying it has taken back control of its computers. "We apologize for any fraudulent posts on our behalf."
Representatives at Le Monde and Twitter were not immediately available for comment outside regular business hours.
In November, the websites of British and North American media organisations and retailer Wal-Mart's Canadian unit were hacked in a suspected attack by the Syrian Electronic Army (SEA).
Among media sites hit were London newspapers the Daily Telegraph, Independent and Evening Standard. The Canadian Broadcasting Corporation and New York Daily News also said they had fallen victim to the hack.
The websites of companies such as the New York Times, the BBC, Reuters and Microsoft have been targeted by the SEA in the past, as have Twitter accounts of other media organisations.