Kopp Online, a German news website, has just published an article which mentioned that Ghost Security Group hactivists have managed to control a bitcoin address related to ISIL and were able to lock out 9554 bitcoins that were going to be used to spread terror all around the world.
Here is a quote from the article that was written in German: Jetzt feierte die Hacker-Gruppe Ghost Security Group bereits einen ersten Sieg: Sie sperrte ein Konto des IS mit 9554 Bitcoins.