A picture taken on April 9, 2015, shows a note on the window of a newsroom at French television network TV5Monde headquarters in Paris, after TV5Monde was hacked by individuals claiming to belong to the Islamic State group. (AFP/Thomas Samson)
A picture taken on April 9, 2015, shows a note on the window of a newsroom at French television network TV5Monde headquarters in Paris, after TV5Monde was hacked by individuals claiming to belong to the Islamic State group. (AFP/Thomas Samson)

Cyberattacks rattle French, Belgian media outlets