A more thorough explanation:

Definition: Classified information is data or material that has been marked as secret or confidential. Only a limited number of authorized people are allowed to know about it.

Examples:

• Government documents that contain sensitive information about national security
• Confidential business plans or trade secrets
• Personal information such as medical records or financial statements

These examples illustrate how classified information is information that is not meant to be shared with everyone. It is important to keep this information private to protect individuals or organizations from harm. Only those who have been authorized to access this information should be allowed to do so.