So basically the fall out from the Dallas Buyers Club case and the new Copyright Amendment Act (2015) means that from September 1st 2015 people will start receiving more infringement notices.
Originally most ISP's was protecting you from copyright holders sending you notices, but not anymore.
From September large copyright holder (media companies) will be employing companies to go on torrent trackers and find Australia IP's that are downloading. Then contacting the ISP's and getting them to send infringement notices.
The new rules means:
There is a 3 strike rule, basically meaning on the 3rd infringement notice (from your ISP), your ISP can be asked to hand your (account holders) details over to the any copyright holder alleging a breach. At which point they could sue you.
Note: Once you get your 3rd notice any copyright holder alleging a breach can get your details and the notices do not have to relate to the same copyright holder.
These rules are also prospective. Meaning breaches previous to September 2015 don't count.
On the 3rd strike you can alleged it wasn't you (ie: it was your housemate), but you cannot before then, which sucks.
Avoiding Notices:
Although I don't encourage piracy, these laws do raise serious privacy concerns, so if you were wishing to avoid your details being provided to a 3rd party by your ISP this is how you could do it:
1) Get an ABN and buy your internet as a business. These laws do not apply to businesses.
2) Get a VPN. The tracking will be based off IP addresses in Australia only.
3) Subscribe to an ISP with less an 1000 subscribers (not the best option :P).
Avoiding Liability:
It should be noted if you ever get an infringement notice asking for $1000's that damages in Australia are limited to the loss incurred. So basically if you download a movie you would have to pay the $25 for the movie. The court said said that speculative invoicing (just sending letter to everyone on a hope they pay) was not allowed in Australia, so this won't occur unless you get 3 strikes.
The only time large damages come into it are if your distribute the content… which unfortunately every torrent does. So you could set your seed speed to 0 to avoid more liability.
Also a company will not want to take you to court as there costs would outweigh their benefit unless they can prove it you were uploading… and even then they probably wouldn't.
It's "copyright".
Copyright Amendment (Online Infringement) Act 2015
Here it is https://www.comlaw.gov.au/Details/C2015A00080
I doubt sole traders qualify for whatever exemption there is for businesses.
Someone will have to tell me if this is strict liability (and cite why)