FireEye speculates that behind the hack of Frances TV5Monde television channel there is the popular APT28 that used the pseudonymous ISIS Cyber Caliphate. Hackers shut down transmissions on the French channel on April 8 and spread pro-ISIS propaganda messages through the social media accounts (Facebook and Twitter) of the French Channel. The hackers also targeted attendees of European defense exhibitions, including the EuroNaval 2014, EUROSATORY 2014, and the Counter Terror Expo and the Farnborough Airshow 2014.”]
Source: http://securityaffairs.co/wordpress/37710/hacking/apt28-hacked-tv5monde.html