The skreosladder game has been attacked by hackers again, and hackers have now profited thousands of EOS. After preliminary analysis, hackers still use transaction crowding attacks, but the difference is that hackers control a large number of accounts to place bets at the same time, and then multiple accounts are used to push blocks due to the large number of accounts participating in the attack. The connection between accounts is not obvious, and the attack is highly concealed.