But ISPs’ costs also include warning people away from bad sites, which requires a due-process system to notify owners of compromised websites – so that they can fix them or realize that they have been exposed. Such a system is relatively expensive to manage, but it is cheaper than the costs of not having it.
但ISP的费用应该包括警告用户浏览不良网站的措施，就是有一个提示网站主人系统受到侵害的提示——这样他们就可以知道自己正在受到侵害并解决问题。建立这样的系统的成本应该不便宜，但如果没有的话，后期所付出的费用应该更高。