The worst security hole I've seen was from a (very very bad) hosting company. And even worse it was just some months ago (summer 2010)! You had to first connect to your hosting package control panel (you needed valid credentials). Once logged in all you had to change was the id GET token from the URL and voilà, you're in the control panel of another user! You have access (save/edit/delete) to emails, files, databases. The ids were sequential so you only have to do +1 and you're in the next account. I hope someone have been fired for this!

这是我和他们一起经历过的众多WTF之一!幸运的是，我不是他们的顾客!

我的朋友曾经用PHP编写了一个论坛脚本。密码保存为一个名为pass.txt的纯文本文件。当然，每个人都可以访问那个文件。

在没有加密的数据库中存储信用卡信息(整个信息:号码+有效期+密码)。此外，该数据库被用作一种CRM，因此许多销售人员可以使用不安全的密码访问它。(自从我3年前离开公司后，他们就没换过名字。)

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

我们有一个旧的计算机集群，在我工作的一个实验室里没有运行。几个本科生认为，让它运行起来会很有趣，这样他们就可以学习一点并行计算了。他们让它运行起来，结果证明它非常有用。

One day I came in and was checking out the stats...It was running at 100%. Now this was a 24 node cluster and there were only 3 of us that ever used it so it was a little strange that it was running at this load. I started playing with it, trying to figure out what was loading it...turned out someone had gained access and was using it as their own little porn server and spammer. I asked the undergrads what kind of security they put on it, they looked at me and said "Security? We didn't think it would need any."

我给它加了个密码，就这样。把它用作色情服务器的人原来是一个本科生的朋友。

我所见过的最糟糕的安全漏洞是，人们在firefox账户上不使用主密码，即使他们让它保存了所有的密码。这意味着任何能拿到你账户文件的人都能窃取你所有的密码。使用主密码。