Explain the key differences between viruses and other malicious codes. Identify at least three (3) different types of viruses, and describe the main differences between each one. Next, explain both the potential threat posed by viruses and other malicious codes and their main effects on computers and productivity.

Discuss the fundamental lesson(s) that we can learn from the attacks of viruses and other malicious codes. Speculate on the main steps that both individuals and businesses can take in order to protect themselves from attacks that may occur in the future.