information

Facts and ideas, which can be represented (encoded) as various forms of data.

Knowledge -- e.g., data, instructions -- in any medium or form that can be communicated between system entities.

Tutorial: Internet security could be defined simply as protecting information in the Internet. However, the perceived need to use different protective measures for different types of information (e.g., authentication information, classified information, collateral information, national security information, personal information, protocol control information, sensitive compartmented information, sensitive information) has led to the diversity of terminology listed in this Glossary.