The 2021 NSF Cybersecurity Summit Workshop on Token-Based Authentication and Authorization (WoTBAn&Az 2021) call for proposals is open until September 14 September 30. To present at the workshop, please send the names, affiliations, and emails for the presenters along with the title and a short description of the topic to be presented to workshop@sciauth.org. See https://sciauth.org/workshop/ for more details.