A secure system is a system on which enough trust can be put to use it together with sensitive information. To reach this trust, the system needs confidentiality, integrity, and authentication.

• Confidentiality ensures that information is not accessed by unauthorized persons.
• Integrity ensures the data has not been tampered with.
• Authentication ensures that users are who they claim to be.

This chapter provides a background on computer security, which sets the foundation for the following chapters that describe how these concepts relate to iWay Service Manager.