For the GitHub integration, Vanta will look to the public email on your public profile in GitHub. If this does not match the email in Vanta, this will not automatically link to their user.

If the email in the public profile in GitHub does match and the user is still not linking successfully, please send in a ticket to support@vanta.com, if you share a screenshot of the user's public profile showing the email does match this will be helpful and appreciated!