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Protection and Security in Operating System

Posted on December 5, 2021December 5, 2021 By christo No Comments on Protection and Security in Operating System

Protection and security in Operating can improve reliability by detecting latent errors at the interfaces between component subsystems. Early detection of interface errors can often prevent contamination of a healthy subsystem by another subsystem that is malfunctioning. Furthermore, an unprotected resource cannot defend against use (or misuse) by an unauthorized or incompetent user. A protection-oriented system provides a means to distinguish between authorized and unauthorized usage

Protection and security require the system to be able to distinguish among all its users. Most operating systems maintain a list of user names and associated user identifiers (user IDs). In Windows parlance, this is a security ID (SID). These numerical IDs are unique, one per user. When a user logs in to the system, the authentication stage determines the appropriate user ID for the user. That user ID is associated with all of the user’s processes and threads. When an ID needs to be readable by a user, it is translated back to the user name via the user name list

operating system Tags:operating system, os

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