So an adversary who's actually trying to break your programs 'cause frankly too much software these days is not written with a paranoia in mind.

或者说是你的敌人,而且千方百计地要破坏你的程序,唉，这种漏洞百出的软件我见过的是在太多了。

哈佛公开课 - 计算机科学课程节选