System Security Fundamentals

From the study guide

Course Outline

  1. Security Objectives and Properties
  2. Control Hijacking and Buffer Overflows
  3. Integer Overflow and Memory Safety
  4. Browser Defenses and Isolation
  5. Robust Software Development
  6. Program Analysis Methods
  7. Privileges and Access Control
  8. Operating System Protection
  9. Exploitation Techniques and Defenses
  10. Fuzzing and Vulnerability Detection
  11. Vulnerability Exploit and Attack

1. Security Objectives and Properties

Key Concepts & Definitions

  • System Security: the protection of computer systems, operating systems, applications, networks, and data from unauthorized access, modification, destruction, data theft, malware, vulnerability exploitation, and denial of service

Essential Points

  • The CIA triad consists of:
    • confidentiality
    • integrity
    • availability

📌 Authentication verifies who a user is, authorization determines what an authenticated user may do, and accountability tracks actions performed by users.

Memory Hook

CIA: Confidentiality, Integrity, Availability

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Practice quiz preview

1. Which security objective ensures that information is accessible to authorized users when it is needed?

2. A user successfully proves their identity and is then allowed to view but not alter a file. Which security functions are illustrated by these two steps?

3. What condition directly defines a buffer overflow?

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Flashcard preview

What is system security?

Protection of computer systems and data from unauthorized access and threats.

What are the three components of the CIA triad?

Confidentiality, integrity, and availability.

What is a control hijacking attack?

It manipulates program flow to execute unintended or attacker-controlled code.

What happens when a buffer receives more data than its capacity?

The extra data may overwrite adjacent memory.

System Security Definition - Label

Protection from unauthorized access and damage

CIA triad components

Confidentiality, Integrity, Availability

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Frequently asked questions

What does the System Security Fundamentals study guide cover?

It covers the core concepts of System Security Fundamentals, organized by topic with the key definitions, explanations and takeaways, so it's easier to learn and remember.

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How many questions are in the System Security Fundamentals quiz?

The practice quiz has 11 multiple-choice questions, each with an explanation. Use it to check what you know and find your gaps.

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How do I study System Security Fundamentals with flashcards?

There are 11 flashcards on System Security Fundamentals, with a question on the front and the answer on the back. Try to recall each answer before you flip, and let spaced repetition bring back the ones you miss.

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