I meant after the hack is done, how do we track where the stolen coins go? Is there a standard way to know "this address has funds that were stolen on mm/yyyy?
It wouldn't change anything even if you do. Bitcoin transactions are irreversible so there is no way of getting it back and as previous users mentioned the hackers will find ways to keep stay safe by either mixing the coins or exchanging them for a privacy coin like Monero.
Depending where you are from law enforcement can't or won't do much about stolen Bitcoins unless the amount is significant.