The only billion project that was imputing the audit team. it seems like the audit already done only by the audit team and as far as I know this blockchain was using 3rd party to audit the code and then the team was not doing a collaboration to fix the bug. This is a very big problem that must be solved as soon as possible. Thor was loosing a lot of funds
As I understand it, the team knew about the errors after the first hack, but deliberately took a risk so as not to stop the blockchain.