最大的安全漏洞是web开发人员在设计开放密码字段的注册表单时。密码字段显示您键入的内容，而不是将其清空。这样，当你在公共计算机上注册表单时，就可以看到你在密码字段中输入了什么。许多网站确实有这样的注册表单。

我相信很少有低安全性的网站，用户的密码和登录信息可以很容易地被管理员访问。

在一些Unix机器(当然是所有的SunOS)上，您可以将setuid shell脚本链接到一个名为“-i”的文件。 shell脚本将文件名解释为它的第一个参数，并运行"sh -i" =一个交互式shell，并获得setuid文件所有者的许可。

因为大多数setuid shell脚本都是以根用户身份运行的，以便允许您执行一些需要根用户权限的操作，比如弹出CD或加载磁带。这意味着在20世纪90年代，在大多数大学的Unix机器上获得管理是很简单的。

1-800 dominos will give unlisted address's related to any target phone number. When prompted if you are calling about the phone number you called from select no. The system will prompt you for a new phone number, the system will then read back to you the name and address that's associated to this phone number. Enter in your target's phone number and you now have their name and address. This is pretty common with automated ordering systems and if dominos has fixed this there are literally hundreds more.

http://apache.org/.svn/entries

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.

2007年，一家相当大的机构的国防部网站出现了错误配置，导致IIS web服务器提供原始代码，主页中有硬编码的用户名/密码和数据库服务器信息。幸运的是，它很快就被抓住了，但我确实目睹了它，这非常令人震惊。不用说，他们的网站被网络工程师关闭了，直到开发人员修复了糟糕的代码。