Review Questions

1. Define steganography.

1. What is a watermark?

1. How is steganography different from cryptography?

1. Name the three main types of steganography.

1. How is steganography used with audio files?

1. What is a cover medium?

1. Name two legal uses for steganography.

1. Explain the least-significant-bit method of steganography.

1. Name two methods used to embed messages in a text file.

1. Explain the process of echo data hiding.