Of course by the time your humble blogger got round to check the site, all evidence had been removed. Looking for the official site in Google brings up a link to http://tickets2.melbournefilmfestival.com.au/
Images of the hack show an almost polite political message under a Chinese flag.
A quick investigation of the MIFF site revealed that it identified itself as a Microsoft-IIS/6.0 server powered by ASP.NET
And herein lies the problem. If one is going to setup a website and start with the poor choice of Microsoft IIS, it is probably not a good idea to compound the problem by not putting it behind a heavily defended (Unix based) firewall.
And if you are determined to carry on with the suicidal course of running such a website, you would be well advised not to upset the Chinese. Although the per-capita computer use in China may not be so large, the total number of computer users is the second largest in the world. And the a lot of those users know about hacking Microsoft systems. In fact when it comes to expertise in hacking Microsoft systems, China may be a world leader.
So if you still think Microsoft IIS is the right system for your weakly defended website, it might be diplomatic to avoid any content that might be construed as offensive to China.