九、常见的web安全问题原理及防御

1、sql注入攻击
https://www.cnblogs.com/digdeep/p/4715245.html
2、XSS(跨站点脚本)和CSRF(跨站请求伪造)
https://blog.csdn.net/koastal/article/details/52905358
3、暴力破解攻击
https://www.cnblogs.com/1996V/p/7458377.html