More DDoS than hacking, but yea.

http://venturebeat.com/2014/12/30/fbi-confirms-lizard-squad-...

http://krebsonsecurity.com/2015/01/another-lizard-arrested-l...

http://www.bbc.co.uk/newsbeat/30306319

They hacked Malaysian Airlines website yesterday. The wiki page goes into more detail: http://en.wikipedia.org/wiki/Lizard_Squad