CodingStyle changed

Added link to QBS #9

CodingStyle.md

@@ -19,6 +19,8 @@ Maintaining proper coding style is very important for any larger software projec
 
 Often, developers, usually smart developers, neglect the value of proper coding style, thinking that it's most important how their code works, and expecting that if it solves some problem using a nice and neat trick, then it's all that is really required. Such thinking shows, however, immaturity and is a signal that the developer, however bright and smart, might not be a good fit for any larger project. Writing a clever exploit, that is to be used at one Black Hat show is one thing, while writing a useful software that is to be used and maintained for years, is quite a different story. If you want to show off how smart programmer you are, then you should become a researcher and write exploits. If, on the other hand, you want to be part of a team that makes real, useful software, you should ensure your coding style is impeccable. We often, at Qubes project, often took shortcuts, and often wrote nasty code, and this always back fired at us, sometime months, sometime years later, the net result being we had to spend time fixing code, rather than implementing new functionality.
 
+And here's a [​link to the real case](https://groups.google.com/forum/#!msg/qubes-devel/XgTo6L8-5XA/JLOadvBqnqMJ) (one Qubes Security Bulletin) demonstrating how the above described problem lead to a real security bug. Never assume you're smart enough that you can disregard clean and rigorous coding!
+
 General typographic conventions
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