Access control is a collection of methods and components used to protect information assets. Although some information is and should be accessible by everyone, you will most likely need to restrict access to other information. Access control supports both the confidentiality and the integrity properties of a secure system. The confidentiality property protects information from unauthorized disclosure. You use access control to ensure that only authorized users can view information. The integrity property protects information from unauthorized modification. Access control gives you the ability to dictate what information a user can both view and modify.
The following are some of the popular methods of controlling access;
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