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Web Security by Hanqing Wu, Liz Zhao

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Chapter 1

View of the IT Security World

The internet was considered to be safe in the early days, but after research by some people on its safety it was found to be very unsafe.

1.1 Brief History of Web Security

Originally, people who researched computer systems and networks were called hackers—those who had a good understanding of computer systems and who were able to identify problems. In the field of computer security, hackers are referred to as rule breakers, that is, those who do not like to be restrained and are keen on finding loopholes in the system in order to obtain power to manipulate the system.

In modern computer systems, the highest authority in the user mode is the root (administrator), which is also the authority all hackers ...

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