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Computer security is the means to guard unauthorized use and abuse of a computer, a set of computers, computer systems, or part of a computer. Access regulation to the memory contained in them can be one form of computer security, but it is also important to note that the concepts are far more complex than a simple login authentication and firewall protection. Apart from entering a code at startup, security for a computer includes establishing protection codes between specific hardware devices to maintain fidelity in the entire system as well.

PC security from external threats

Guarding against intrusion on a computer is easiest when it is switched off under lock and key. However, when connected to the outer world via cable or Wi-Fi, a computer’s memory system can be open to receiving malicious codes. That is why firewalls are important. While each computer is also connected to possible malicious content…

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