wHaT iS NaTioNal SeCuriTy?

Importantly, national security is not just about countering threats; it is also about making the most of
opportunities. In particular, Australia seeks to shape the international environment, both to prevent
the emergence of security threats, and to achieve broader bene¿ts for
Australia (such as trade and
economic bene¿ts).

Also remember that the reason people are angry is not because the NSA is doing spying, ofcourse they'll do that.
The reason people are angry is that the NSA is doing warrantless (and often times illegal) spying on everybody without any kind of reason or justification. You don't think they spy on you because you're a good law abiding person? Think again, not only are they spying on you but they're collecting your passwords and storing your private email.

In addition to that they're introducing back doors in software and encryption schemes, which means they're making everybody's computers significantly less secure. These kinds of backdoors and exploits are just as easily taken advantage of by (non-government) hackers.

But hey, this is all to prevent muh terrerists, right?
*cough* Boston marathon *cough* 9/11 *cough*
Nice job stopping terrorists, NSA