@UG aka #UGNAZI has been very very busy the past few weeks with big and high profile targets being attacked and lots of main media attention being directed towards them. The latest attack is on Six Flags Entertainment Corporation which has been breached, hacked and now sports a all new deface page. 
The hack has seen not only the sixflags.COM website attacked but all domains, the .org and .net redirect to their twitter while the .com is defaced but it appears there is caching issue which is preventing a lot of people from viewing it. We used hidemyass free proxy service to view it and it was indeed hacked and defaced.
UGNazi
@UG https://sixflags.com | https://sixflags.org | https://sixflags.net#defaced, Lets enjoy the ride.#UGNazi#LETZGO#Havoc
@UG has also stated via twitter that they, sixflags.com admin are attempting to gain back control. > UGNazi @UG @Cyber_War_News They have gained access back, but we are regaining access. #UGNazi
About sixflags:
Six Flags Entertainment Corporation owns and operates regional theme parks and water parks, and is the largest regional theme park operator in the world. The Company owns and operates 19 parks, of which 17 are located in the United States, one in Mexico City, Mexico and one in Montreal, Canada. The Company holds exclusive long-term licenses for theme park usage throughout most of the United States, Canada, Mexico and other countries of certain Warner Bros. and DC Comics characters. These characters include Bugs Bunny, Daffy Duck, Tweety Bird, Yosemite Sam, Batman, Superman and others. In addition, the Company has certain rights to use the Hanna-Barbera and Cartoon Network characters, including Yogi Bear, Scooby-Doo, The Flintstones and others.