Computer security

Computer security is a field of computer science concerned with the control of risks related to computer use. The means traditionally taken to realize this objective is to attempt to create a trusted and secure computing platform, designed so that agents (users or programs) can only perform actions that have been allowed.

This involves specifying and implementing a security policy.
The actions in question can be reduced to operations of access, modification and deletion.
Computer security can be seen as a subfield of security engineering, which looks at broader security issues in addition to computer security.

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