Get a master dgree in aus

I am a undergraduate student in china ,now im grade 3 and i plan to get a master dgree in aus and my major is computer information security,now as u know the economy recession has a big influence in china too,it's hard to find a job in china nowdays ,i will graduate next june,so i want to keep on studying to escape the working,could someone give me some advice about the major in master in aus,and it is no need to be relevant with my current major.if possible i want to migrant,so i hope after my major is easy to find a job . Er and i want to study in G8,hoping for your answering.or u can e-mail me :yizhongchuanqi@163.com