Hackers do not simply compromise an existing system, they follow a methodology, and in the end they compromise vulnerabilities somewhere in the environment. Your boss has asked you to describe how a hacker accomplishes this task. To help understand this, provide your input to the following:

• Describe and define a vulnerability.
• Describe and define an exploit.
• Describe and define an attack.
• Lastly, describe how all three of these concepts work together and lead to a compromised system.