Protection and Security
The chapter provides a comprehensive exploration of protection and security mechanisms within operating systems, emphasizing the importance of principles such as the principle of least privilege and the access matrix model. It details the various security threats, including malware and denial-of-service attacks, while also discussing countermeasures such as authentication methods and cryptography. A thorough understanding of these principles is essential for ensuring secure and resilient computing systems.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Protection mechanisms aim to prevent unauthorized access and ensure data integrity.
- The access matrix model serves as a conceptual framework for defining access rights to resources.
- Various security threats, including malware and denial-of-service attacks, require robust countermeasures.
Key Concepts
- -- Principle of Least Privilege
- Every user or process should be granted only the minimum privileges necessary to perform its functions.
- -- Access Matrix Model
- A two-dimensional representation that defines the access rights of subjects to objects within a system.
- -- Cryptography
- The science of securing communication and data through mathematical techniques, ensuring confidentiality, integrity, authenticity, and non-repudiation.
- -- Denial of Service (DoS) Attack
- An assault on a system designed to make it unavailable to legitimate users by overwhelming it with traffic.
- -- Malicious Software (Malware)
- Software aimed at infiltrating or damaging systems without consent, including viruses, worms, and Trojan horses.
Additional Learning Materials
Supplementary resources to enhance your learning experience.