The hackers group known as "Bangladesh Grey Hat hackers(BGHH)" protesting against the Innocence of Muslims video by breaching the website belong to Bank On Houston (bankonhouston.org).
"You have insulted and abused Islam and have mocked our beloved Prophet Muhammad,Peace and blessings be upon him by releasing the video 'Innocence of Muslims', for this we will not remain silent! This video was deliberately release not to bring peace and unity but to cause upset and insult amongst Muslims around the world." Hacker said in the defacement page.
" We have hacked your site, not for sabotage, but to show solidarity for Muslim brothers & sisters around the world and to teach you the real message of Islam " Hacker stated as the reason for the attack.
At the time of writing , we are able to see the defacement page. The mirror of the defaced site can be found here "http://zone-h.com/mirror/id/18399652". Hackers also claimed that they will soon release the compromised database.