Supporting software security by measuring, coordinating, and enforcing software trustworthiness

在选择安全软件来保护自己的电脑时，公众通常没有多少指导。使这个问题如此困难的是缺乏关于计算机系统（及其软件）的哪些特定部分的信息，各种杀毒软件、反间谍软件和防火墙软件实际上监视和防御。信息安全专家通常推荐多层防御（即“纵深防御”），但是很少有具体的证据来判断选择什么软件或确定这些层的组成。

The public often has little guidance when selecting security software to defend their computers. What makes this problem so difficult is the lack of information on what specific parts of a computer system (and its software) various anti-virus, anti-spyware, and firewall software actually monitor and defend. Information security experts typically recommend multiple layers of defense (i.e., "defense-in-depth"), but there is little concrete evidence for judging what software to pick or determining the makeup of those layers.