What does hidden data in documents typically include?

• A. Data that is publicly accessible
• B. Metadata and server properties
• C. Only images used in the document
• D. All user comments

Answer: (B)

Hidden data in documents often includes metadata and server properties, which contain information that is not immediately visible to users when viewing the document. Metadata can encompass a range of details such as the author of the document, the creation date, modification history, and information about the software used to create it. Server properties may include details related to the server where the document is stored, such as access permissions and version control.

This information can pose a security risk if it is not properly managed, as it can inadvertently reveal sensitive data or intellectual property. In contrast, the other options suggest either publicly accessible data, specific content types like images, or user comments—all of which are typically visible or intended for others to see, rather than being classified as hidden data. Understanding the nature of hidden data is crucial for maintaining network security and preventing unauthorized access to sensitive information.