Can anyone open a document or photo link I shared?

Reviewed answer

An anyone-with-the-link setting can allow access without knowing who opens it.

Open the file's sharing controls and change general access to Restricted or specific people where supported.
Review individual permissions and the parent folder's access. Remove people who no longer need the file.
If sensitive information was exposed, tell affected people and address that exposure. Revoking access does not erase copies already downloaded.

Get help if

The file contains identity documents, financial details, passwords, or information meant for a small private group.