© Abhishek Chopra, Mukund Chaudhary 2020
A. Chopra, M. ChaudharyImplementing an Information Security Management Systemhttps://doi.org/10.1007/978-1-4842-5413-4_1

1. The Need for Information Security

Abhishek Chopra1  and Mukund Chaudhary2
Faridabad, Haryana, India
Noida, India

In theory, one can build provably secure systems. In theory, theory can be applied to practice but in practice, it can’t.

—M. Dacier, Eurecom Institute

This chapter lays the foundation for understanding information security. It discusses the following:
  • What is information security?

  • Information security management ISO 27001

  • Why is it important to safeguard information?

  • How is the ISO 27001 applicable to you?

What Is Information Security?

Before you learn about information security ...

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