安全相关资料

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwjc_eqbipH7AhWy1TgGHUFlDMEQFnoECAsQAQ&url=https%3A%2F%2Fpaper.seebug.org%2F632%2F&usg=AOvVaw14eo8RAc762vHREfHWyWtU

https://mirror.xyz/ninjak.eth/ygaDE0QQwn3lfI-AVaw0ZMqHQtWCdzo-XV450j2camc

https://paper.seebug.org/632/

https://ethernaut.zeppelin.solutions/level/0xf70706db003e94cfe4b5e27ffd891d5c81b39488 （合约漏洞合集网站）

https://consensys.github.io/smart-contract-best-practices/development-recommendations/general/external-calls/#favor-pull-over-push-for-external-calls openzepplin安全开发建议