About 3 years ago I built a site for a somewhat large non-profit organization in our state. When it came time to deploy the application to their web host server, I noticed an odd file named "cc.txt" or something obvious like that in their public site. It was under their web root, was getting served, and was a csv file of all their donor's names, addresses, credit card numbers, expiration dates, and CVV/CVC codes. I cannot count the number of times I brought the issue up - first to my boss, then our company accountant, the client's IT director, finally the client's President. That was 3 years ago. The file is still being served, it can even be googled. And it's been updated. I tend not to respond to their donation solicitations when I get them.

public class AuthenticationServlet extends HttpServlet
{
    private String userName;
    private String password;

    protected doPost(HttpServletRequest req, HttpServletResponse resp)
           throws ServletException, IOException
    {
        userName = request.getParameter("userName");
        password = request.getParameter("password");
        authenticateUser(userName,password);
        ......
    }
}

显然，正如有人在自动化负载测试中发现的那样，单例和缺乏同步会导致安全问题。

我记得申请大学的通用应用程序网站有这个“安全”功能，它宣布将在一定时间后注销你。但是，他们使用了一个警告框，如果你没有真正回应，就会暂停倒计时，使你的会话无限期。

我不想承认这一点。但是有一天，当我没有存储库的管理密码时，我发现了如何破解VSS 2005(讨厌的部分是不得不使用VSS:D)

如果您创建了一个具有管理权限的本地计算机帐户，该帐户与VSS帐户具有相同的名称，并登录，VSS会提示:

 "Hey great .. you are logged on to the computer with an account name that 
  I recognize as being the same as one of my accounts,
  and your account has admin privileges on the computer .. 
  so I am going to bypass *my* security and give you admin 
  privileges to all of VSS!!!!"

那次黑客攻击是我在谷歌上看到的第一个链接，当时我试图破解VSS密码

当然，它不会提供您所缺少的VSS密码

在文本框中输入1=1将列出系统中的所有用户。

几年前，一所学校托管了一个学习平台网站，可以上传。php文件到网站上，然后再执行，所以他们给了你整个网站的完全访问权限。还没有被其他学生发现，我认为这个错误仍然存在。