Internet本来是符合人们对信息开放与共享的初衷而出现的,但是人们在享受到Internet的便利时又希望能够保有自己的私密信息不为他人所知,这才有了对网络安全的需要。所以一般说来首先是网络基础设施和网络服务有了一定发展后,人们随之开始在网络安全方面的投入。 The Internet has always been in line with the original intention of people to open up and share information, but people want to be able to retain their own private information without being aware of others when they enjoy the convenience of the Internet. This has the need for network security. So in general, the first is that after the network infrastructure and network services have been developed, people begin to invest in network security.