First post - may be useful to some. CBA Netbank customers can get a 6-month subscription of McAfee Internet Security + 25% off renewals.
It does require your credit or debit card for automatic renewals*. You will just need to remind yourself to cancel before your renewal is to take place. To cancel the automatic renewal, contact McAfee Customer Support at 1800 998 887 prior to the expiration of the 6-month free subscription.
When the free 6-month subscription expires, CBA customers will receive a 25% discount on their renewal subscription. Subscribers will apparently be notified before the subscription is automatically renewed. But cancel as above to avoid renewal.
*Account creation required
There's free programs out there that do just as good a job, but considering they are offering it for free too, i'd rate this as a bargain. I just wouldnt give them any subscription fees :).