The Importance Of Computer Security

Computer security is needed to protect the computer and the data that is stored or accessed in the computer. Computers are used on jobs, in schools, and for research. They also support critical business processes. Computers protect personal and sensitive information for businesses too. The meaning of computer security has changed over the years. In the past people did not have to worry about someone putting a virus on their computer, the only problem they had then was someone taking it from them. There were viruses, but they were used for the mainframe so they would not work, not for personal computers. Even at this time there were not a lot of personal computers in use. A lot of people could not afford them in the past. Then you had people that did not know what computers were and what they did. Now today you cannot find a person that doesn’t know what a computer is for. Today most people have at least one computer of some type in their homes. In the business world people would lock up the computers in the computer room to keep people from messing up the machine. The machines were too big to carry out. The main frames were massive machines that took up a lot of space. You did not have to worry about someone moving them. Today computer sizes are a lot smaller. These computers are portable so they can be carried off but that is not the main problem. The main problem come in to play when you have people stealing data off of your machine while you are on the internet surfing. All users want to prevent theft of their computer and theft to the data that is in their computer. Users do not want anyone to put viruses on their computer or anything that may damage the computer. Some business will only allow strict acce...

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...spyware or antivirus. Also, these programs can remove malware and malware can be detected. Malware is any activity of a software that damaging, or block activity to a service of a computer system. Types of malware are spyware, keystroke loggers, worms and Trojan horses. Application permission is another part of application security. Application permission allow for the owner of the software to only have rights to the application. There may be other uses that can enter data, but they cannot change the data or delete the data. The programs are setup so that the users that did not have permissions can use the programs but they cannot make changes to the programs. Input validation is the process of validating the data that is entered into a system. If the data is not validated then there will be more errors in the output and erratic system behavior. When bad