安全问题被越来越多的人提到越来越重要的地位上来,这本是好事。但现在国内有相当多的人认为,为了保证安全,只有采用物理隔离的办法才奏效。在这种情况下,数不清的厂商开发出各式各样的具备物理隔离功能的解决方案来。网络上层出不穷的攻击手段诚然让人担忧,但动辄就实施物理隔离的手段,只能说是因噎废食。实际上,绝对的安全是不存在的。美国的一个安全权威机构曾经定义了一个所谓的“绝对安全”的例子——把硬盘封闭在抽成真空的金属箱子里,将箱子沉入不知名的海洋中。这样, This is a good thing as more and more people are referring to the increasingly important security issue. However, quite a lot of people in our country now think that only by adopting the method of physical isolation will it work for the sake of ensuring security. Under these circumstances, countless vendors have developed a wide range of solutions with physical isolation capabilities. An endless stream of attacks on the Internet is indeed worrying, but at times the means of implementing physical isolation can only be described as unlucky food. In fact, absolute security does not exist. A U.S. safety authority has defined a so-called “absolutely safe” example of enclosing a hard drive in a vacuum-filled metal box and sinking it into an unknown ocean. such,