Its interesting how can this happen in Australia (and happens so often to all exchanges), that stolen funds are sent with bank transfers?
Is it funds from accounts accessed with passwords grabbed by keylogger/phishing?
If so, how does this happen? Are there banks in Australia which allow transfers to be sent online without one-time code two-factor authentication (like SMS-code, hardware token, one-time codes on paper list)? Because in Europe I haven't yet seen a bank which allows transfers to third-party account sent without one of these one-time code authentication methods for the transfer, or at least once for the account number to transfer to.
My bank unfortunately has not given me any details, but that could be because they themselves don't know- in both this case and the previous case, I believe a user account from another bank was hacked.
As for how the hacker did it, I assume it was an account with no 2nd level of authentication. I have several bank accounts, and two of them don't require a 2nd level of authentication for sending small amounts (e.g. up to $500 AUD).
As for how they got past the 1st level of authentication, the NAB (one of the largest banks in Australia) has terrible level 1 authentication- the 'username' for logging in is a "customer code" that is printed on each debit/credit card they give to a customer (so anyone would holds the card for a few seconds could remember it if they wanted - they are only about ~8 digits long) while the password must be a 6-8 alphanumeric. You cannot make your password longer, or use characters besides alphanumeric.
That said, I suppose it is more likely the hacker used a keylogger or engaged in phishing.
Can you shed some light on this how Australian banking works?
And what are the liability/burden-of-proof rules?
Because for example in Poland, if a transfer is being made online from a customers bank account, it is deemed to be made by the account owner, because only he has the authentication codes, and it is his deed to protect them. If he unwillingly discloses them to someone, its is HIS fault, and the bank will NOT reverse his transfers if he then goes to the bank and says "I didn't do these, someone must have hacked to my account". Such explanation is not valid, banks reject such claims. I know from press reports of the (very few) cases when the account owner disclosed his one-time codes to the hacker. The bank did not believe him and did not give back his money. If from a customers bank account a transfer was made authorized with a one-time code - that's proof that the customer did it (or someone authorized by him, even if unwillingly - he is still liable). That's how it is in Poland. Maybe that's why the two largest exchanges (MtGox and Intersango) both have their accounts in Poland, and keep them without problems, without a single case of account being locked since ever they started using these accounts last year.
Does authentication and liability work differently in Australia?
I suspect banks in Australia would be more lenient, and I think banks are liable for lost funds due to hacking. I'm not sure though, and I'm not sure what proof you would have to show.
Poland's attitude sounds more mature- bank's put the responsibility on the users, who it turn would be motivated to seek out banks that have good security. In Australia I believe the law is such that banks are required to cover user's losses due to hacking, which I think makes users complacent about security.