In June 2013 an attack on Belgacom surfaced. Even though it seems that it started 2011, Belgacom seemed to figure out that they are under attack as Exchange did not work properly anymore.
There are a lot of interesting details on the attack in this article: Operation Socialist.
What strikes me more than the attack itself is the behavior of the governments on the Internet. It seems that nobody cares about agreements and other sorts of contracts anymore. Everybody takes what they want and completely asymmetrically.
If we look at the United States, they were fairly clear how they treat attacks on