If you lock part or all of a hosted document library, you will want to be sure the private content stays out of Google and other search engines. This guide explains how that works.
Access control is available on the Advanced plan. Whenever you protect a library from your dashboard, hosted Document Library Pro keeps that content hidden from search engines automatically.
How protected content is hidden
Protected content is marked so that search engines are told not to index it or follow its links. This applies to protected libraries, and it happens without any extra setup on your part. Individual documents never have their own indexable page, so they cannot appear in search results on their own.
Things to keep in mind
This handles the vast majority of cases, but we cannot promise protected content will never show up in results. A few search engines ignore these instructions, and if a page was already indexed before you protected it, it may linger in results until the search engine recrawls and drops it.