According to blockchain security company PeckShield, the TronWow was attacked by a random number for the previous wave quiz game. The analysis found that the TronWow contract has flaws in checking the betting range, allowing users to construct malicious input when non-page betting. Complete the game results of steady wins. PeckShield reminds: In recent days, TRON Eco has faced the problems of frequent EOS attacks such as counterfeit currency attacks and random number cracking. It does not rule out the possibility of other related attacks (including contract overflow and transaction blocking) in TRON. It is reminded that DApp developers should strengthen their security awareness and make necessary security measures and known attack signature checks before the contract goes online.