The hackers did not deface the main page of the website. Instead, hackers added a static html page named “x.html” at the end of the website URL.
This is not the first time, big site is defaced by Xploiters Crew, before they hacked Soneri Bank, Habib Bank Limited, Allied Bank Limited, Muslim Commercial Bank, Tameer Bank.
Anatomy of attack is unknown. Its unclear, what level of access the hacker got? Does hacker got access to the user databases? The website is built using PHP scripting language, It seems that hacker found a zero day in the script of the website and defaced the website.