1. Operating System Security
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1 Operating System Security
Operating System (OS) security is the practice of protecting the integrity, confidentiality, and availability of the data and resources managed by an operating system. It ensures that only authorized users can access the system and perform permitted actions, preventing misuse, attacks, and data breaches.
Key components of OS security include:
User Authentication – Verifying user identities using passwords, biometrics, or multi-factor authentication.
Access Control – Regulating who can read, write, or execute files and resources using permissions and access control lists (ACLs).
Firewalls and Antivirus – Built-in firewalls block unauthorized network access, and antivirus software detects and removes malware.
Patch Management – Regular updates and patches fix security vulnerabilities and bugs in the OS.
Encryption – Encrypting data stored on disk and during transmission protects it from unauthorized access.
Auditing and Logging – Monitoring system activities helps detect suspicious behavior and investigate incidents.
Sandboxing and Virtualization – Isolates applications to prevent them from affecting the core OS.
Popular OS like Windows, Linux, and macOS implement these security features in different ways. For example, Linux uses file permissions and SELinux for enhanced security, while Windows includes tools like BitLocker and Windows Defender.
Overall, OS security is crucial for protecting personal, enterprise, and government systems from threats like hackers, viruses, and data theft.
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