Provide confidential information

If you want to provide confidential / private information, typically for a public bug report, do the following:

1. Report a new problem here: https://developercommunity.microsoft.com/dotnet/report. Briefly explain that you just want to provide private information to a public bug (add a link to the public bug).
2. Once the report has been opened, you can add private attachments to it. You can also use a file-sharing service and just share the link in a private comment (this has the advantage that it's easier for you to remove the shared contents later on).
3. Also post a link to the report in the public bug, so that we can easily cross-reference them.

An alternative method, if you want to share private code already on GitHub, is to invite someone from our team as a read-only collaborator to your project.