Looks like Acala Network was just hacked due to a bug in the iBTC/AUSD pool. Here is the attacker wallet which now holds over a billion $aUSD. https://acala.subscan.io/account/26JmEcghNmggvT46sojckg34Py9zFRKkCcFy3gr49hrFgT2k

And as expected, the devs ask for a proposal to pause the blockchain https://twitter.com/AcalaNetwork/status/1558642849649856512

DeFi is still a complicated topic.