Who can see my Box folder?

Can you please elaborate on the visibility of files and folders in Box? I'm particularly concerned about who has access to my Box folder. Are there any default settings that determine who can see my content, or do I need to manually set permissions for each individual or group? Is there a way to ensure that only authorized users can access my files, and are there any security measures in place to prevent unauthorized access? I'd appreciate a clear understanding of the privacy and security features offered by Box for my folder and its contents.