一个让我害怕的安全漏洞是在我曾经维护的一个遗留应用程序中，其中有一个settings.ini文件，其中的数据库凭据是纯文本的，所有用户密码都以纯文本的形式存储在数据库中。

我见过的大多数安全漏洞都发生在我的高中和大学。

首先，我发现我可以通过(非常简单的)ping flood攻击来关闭学校的互联网。不仅仅是我高中的互联网，整个学校系统，包括大学的一部分。绝对没有速率限制。在我演示之后，他们最终把它修好了。(顺便说一句，我的第一份编程工作就是靠这种“宣传”获得的)

第二点，也是可能性更大的一点是:

Ok, so every computer in the school was connected to a domain and such. So, when you logged onto a computer, it would copy down a generic user directory(including application data, etc folders) and then proceed with the login. Some people had their own logins other than the generic "student" account for one reason or another. Well, while I was browsing the public server where everything was shared on, I found a /users directory. Upon looking at it I discovered froma generic student account I had read-write to every users directory, including teachers, administrator, and the generic student account.

为了愚人节，我计划写一个简单的批处理文件或小程序，弹出一些类似Class of 09 rocks的东西!登陆每个人只是为了演示它，但我退缩了。我也从来没有告诉过管理员，所以这个安全漏洞可能仍然存在。

我见过很多客户项目，这些项目都包含IP地址、用户名和SQL server数据库的密码。

一些朋友在大学里是同班同学。他们发现教授把所有的作业答案都贴出来了，甚至包括那些还没有交作业、还没有打分、甚至还没有布置的作业。教授只是把它们的链接或解决方案嵌入到课程网页中，并将它们注释在HTML注释中，直到作业被收集和评分。

login.jsp?type=user&redirct=/home.jsp&userid=12345&username=username&password=mypassword

这发生在一个非常大的网站上。当我看到这个的时候，我惊呆了。

在因特网上发布你的ELMAH错误日志怎么样?

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.