Their threat-promise was done Anonymous, as they seem to have started their own war against the Jihadists today.
From the morning members of the team announced to Twitter and with the hashtag OpCharlieHebdo that he hacked the webσελίδα ansar-alhaqq.net, which is a French jihadist website.
At the same time, they named dozens of jihadists accounts on Twitter, and they say they are followed.
Source: iefimerida.gr