我希望你能发现这里的问题。(事实上，大错特错):

String emailBody = "";

for (int i = 0; i < subscribers.Count; i++)
{
    emailBody += "Hello " + subscribers[i].FirstName + ",";
    emailBody += "this is a reminder with your account information: \n\n:";
    emailBody += "Your username: " + subscribers[i].Username + "\n";
    emailBody += "Your password: " + subscribers[i].Password + "\n";
    emailBody += "Have a great day!";

    emailDispatcher.Send(subscribers[i].EmailAddress, emailBody);
}

最后一个接受者是最幸福的;)

当你丢失了密码和找回表格时，询问用户名和你的电子邮件。并且不验证电子邮件并将密码发送到指定的电子邮件。

刚)一/总动员:

这是在一个本地电视付费/订阅的网站上。很容易找到用户名，很多人使用名字。今天这个电视频道已经破产了(因为其他原因，比如缺乏专业精神)。

有一家银行通过其网站提供一些服务。开发人员考虑了任何作为整个系统的有效用户登录的人，他们使用URL来识别账号，因此只需更改URL上的ID，就可以查看其他账户的余额。

对于认为身份验证和授权是一回事的web开发人员来说，这是非常糟糕的。

此外，银行不通过其网站转账也很好，否则有些人会很富有;-)

我的银行曾经在我的借记卡上发现了一笔“可疑交易”。他们建议我取消它，买一个新的。

在等待新卡的时候，我需要取钱。于是我走进银行，把我的旧卡给了那位女士，并解释说:“这张卡最近被取消了，但我需要一些钱。你能从这个账户里取点钱吗?”

当我走出银行时，口袋里揣着现金，我意识到我刚刚用一张注销的卡从一个账户里取了钱，而没有被要求出示任何形式的身份证明。

I was going to earn my credit with the supervisor for my quite advanced graphics program at a SunOS / Solaris with instant messaging enabled where with zephyr.vars or whatever it was called you could make an image appear on your listed friend's screen like if you alowed me I could just send you an image that appeared on your display. While I was demoing the program I had written so that the supervisor could give me credit for it, one of my friends sitting close or in the next room made the photo big-mama.xxx appear on my screen. There was never any discussion or penalty because of the incident and I got credit for the project that for ½ second seemed like it was programmed to display big-mama.xxx instead of solving the problem. (Earlier) I updated perl scripts and waited for sysadmin to reflect the changes to ouside the FW. Then the database was gone and it was not a bug it was a feature since the data was stored with the source and therefore updating the source blanked the persistence.

物理访问或模拟登录提示或登录屏幕是另外两种困难的情况，不需要过多的算法技术，很容易理解物理访问提供了许多可能性，模拟登录提示是您可以在许多不同类型的计算机和环境上进行的事情。

前一段时间，JPG图像加载库的窗口存在安全漏洞。被电子邮件中的图像感染。消