I just went to the Westpac and saw this. Bitdefender is growing in popularity and with it being free, hey worth a go right.
Range of prices here.
Products available from promotion…
Bitdefender Internet Security 2013
Bitdefender Antivirus for Mac
Bitdefender Internet Security 2013 + Bitdefender Mobile Security
Bitdefender Antivirus for Mac + Bitdefender Mobile Security
**** UPDATE ****
I copy / pasted the URL to see if I could register another copy for my wife. Seemed to work as I just receive another registration code via email.
Non-Westpac customers could give it a go.
*** COMPARISIONS ***
Its hard to know what sites to trust these days but Bitdefender comes up top of the pile compared to this site.
Click on protection twice to order by high to low (http://www.av-test.org/en/tests/home-user/windows-7/)