“Anonymous from all over the world will hunt you down,” said the voice in the video, which included footage of the group’s famous Guy Fawkes mask and was in French. “You should know that we will find you and we will not let you go.
“We will launch the biggest operation ever against you.
“Expect massive cyber attacks. War is declared. Get prepared.
“The French people are stronger than you and will come out of this atrocity even stronger.”
No. If anonymous is going to do something they should execute first and then talk after -- if people know what's coming it's easier to prepare for the storm.
They can do damage. ISIS is very dependant on social media (in recruiting for example). I hope they can expose who is financing them. That alone would be major.