在我工作的一个网站上，他们使用用户名和密码作为组合主键。用户名自动是您的姓，不需要唯一。

这就只剩下一件独一无二的事情了…

意外地将数据库根密码提交给源代码控制。这很糟糕，因为它是Sourceforge上的源代码控制。

不用说，密码很快就改了。

有一个云渲染库的许可证是2500美元，在注册之前有有限的工作时间(比如一分钟)。评估演示可以无限地运行。在exe内容中搜索单词“demo”会显示“[产品名称]demo”和附近的十六进制符号字符串。是的，那是登录名和密码。

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)。

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。

我见过缓冲区溢出，可以(理论上)通过传真输出。

有一个自动的文件路由过程，它将传真作为输入，对它们进行OCR并提取一些信息，然后在此基础上进行LDAP搜索，等等。 不知道这是不是“最糟糕的”，但肯定让我笑了。