How is the purpose of information security policy best described?

Information has a number of reliability aspects. Reliability is constantly being threatened. Examples of threats are: a cable becomes loose, someone alters information by accident, data is used privately or is falsified.
Which of these examples is a threat to integrity?

-------------------------is an asset like other important business assets has value to an organization and consequently needs to be protected.

A hacker gains access to a web server and reads the credit card numbers stored on that server. Which security principle is violated?

What is the goal of classification of information?