Computer Security is a branch of technology known as information security as put on computers. Information security means protecting information and knowledge systems from unauthorized access, use, disclosure, disruption, modification, or destruction. The goal of computer security varies you need to include protection of data from theft or corruption, or preservation of availability, as defined in the security policy.
Technological and managerial procedures placed on personal computers to guarantee the availability, integrity and confidentiality of info managed with the computer
Computer security imposes requirements on machines distinctive from most system requirements since they often make type of constraints on the computers are certainly not meant to do.
Typical methods to improving computer security normally include these:
o Physically limit access to computers to only people that will not likely compromise security. o Hardware mechanisms that impose rules on applications, thus avoiding according to computer programs for computer security. o Operating system mechanisms that impose rules on programs in order to avoid trusting applications. o Programming methods to make applications dependable and resist subversion.
Computer Security has three Layers:
o Hacking o Cracking o Phreaking
Hacking:
Unauthorized use or tries to circumvent or bypass the security mechanisms associated with an information system or network.
Computer hacking always involves some degree of infringement about the privacy of others or harm to computer-based property for example files, web pages or software. The impact of computer hacking varies from truly being simply invasive and annoying to illegal.
Cracking:
The act of breaking into some type of computer system. Software Cracking could be the modification of software to remove protection methods: copy prevention, trial/demo version, serial number, hardware key, CD check or software annoyances like nag screens and adware.
The most frequent software crack is the modification of your application's binary to result in or prevent a particular key branch inside the program's execution.
Phreaking:
The skill and science of cracking the telephone network.
Security by design:
The technologies laptop or computer security are based on logic. There is no universal standard thought of what secure behavior is. "Security" can be a reality that is unique to each situation. Security is extraneous for the function of your personal computer application, rather than ancillary to it, thus security necessarily imposes restrictions for the application's behavior.
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