Integer overflow weakness similar kill the Ethereum – for more details, please see below (url): Jul 2018 – Integer overflow may killed Ethereum! But SafeMath to protect from overflows. c >= a causes integer overflow happen arithmetic: c=a+b-M (where M = 2**256 is the max unit256 plus one) If c >=a replace to get a … Continue reading Integer overflow weakness similar kill the Ethereum. But SafeMath to protect from overflows.