Unexpected sharing or a misunderstood setting?

A document was visible to more people than I expected. How should I investigate?

Review the exact sharing link and recipient settings in the official interface. Remove access you do not intend, and avoid posting the document publicly while asking for help.

Could a general sharing link and an invitation to a named recipient leave different access paths open?

That answers where to check first. I'll review both the link and recipient settings privately rather than posting the document here.