During the incident if you visit the UNN website you will see a warning message pointing at a security loophole, that the manager should fix it, the message was from Nasty the Hacker. 

Actually, I will say that Nasty is a good guy by pointing to the security error but he was not smart enough. He can't just hack a website just to display a warning message. So what he actually did was to replace the main WordPress Landing page, while all the UNN files and data are all intact.

So what UNN did was just to remove the dump landing page, by doing so the website comes back to normal.

Thanks for reading