The more complicated the application logic, the more chances there are for attackers to find a hole.
应用程序逻辑越复杂，攻击者找到漏洞的机会也就越多。
2
For example, a next generation email application may have its own incoming activity stream, allowing information to be pulled out of the black hole that we know as the inbox.
比如下一代email应用可能会有自己的外来信息流，允许人们从收件箱里提取信息。
3
Is that application secure, or is there a hole or vulnerability that you don't know about?