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Manmohan Sharma, Lovely Professional University Unit 3: Building Blocks of Information Security

Unit 3: Building Blocks of Information Security Notes

CONTENTS
Objectives
Introduction

3.1 Information Security
3.1.1 Need for Information Security
3.2 Basic Principles of Information Security

3.2.1 Secrecy
3.2.2 Authenticity
3.2.3 Confidentiality
3.2.4 Integrity
3.2.5 Accuracy

3.3 Terms
3.4 Three Pillars of Information Security
3.4.1 Confidentiality

3.4.2 Integrity
3.4.3 Availability
3.5 Information Classification
3.6 Summary
3.7 Keywords

3.8 Review Questions
3.9 Further Readings

Objectives

After studying this unit, you will be able to:

 Understand the concept of information security
 Discuss principles of information security
 Recognize various terms related to information security
 Explain three pillars of information security

 Understand information classification

Introduction

Computer systems are vulnerable to many threats that can inflict various types of damage
resulting in significant losses. This damage can range from errors harming database integrity to
fires destroying entire computer centers. Losses can stem, for instance, from the actions of

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