The Upbit hacker launders funds through Railgun, passing the mixer’s proof of innocence

The Upbit hacker moved funds through Railgun, passing the mixer's test for banned wallets. The exploiter bypassed the test by quickly moving funds between wallets, so Railgun did not have an updated database of flagged addresses. source: https://www.cryptopolitan.com/upbit-hacker-launders-funds-through-railgun/