xBlackw0lf is one of the members of Xl3gi0n Hackers who joined the group last March 2013 who also created the secondary group, xdevilhackers. He has conducted a large number of small scale attacks that largely target the .eu and .de domains.
He maintains the Twitter profile @thexugj and possibly the Facebook fan pages http://www.facebook.com/xl3gi0nhackers and http://www.facebook.com/thexugj.gov
He has been in a feud with the group “Central Intelligence Anonymous” which resulted in xBlackw0lf hacking their Facebook fan page last March 2013.
He has also developed a feud between the members of Anonymous Squad No.35.
He is from Switzerland.
https://www.facebook.com/xblackwolf.gov
https://www.facebook.com/xDevilhackers.gov
https://twitter.com/thexugj