Dear RIPE, in December 2021, the RIPE community was asked [1] to help by answering to a survey about the Secure Backbone AS (SBAS) architecture. Now, we would like to follow-up with the results of that survey which are included in a recent USENIX paper: Creating a Secure Underlay for the Internet https://www.usenix.org/system/files/sec22-birge-lee.pdf A full description of survey questions and results is contained in a tech report: https://arxiv.org/abs/2206.06879 [1] https://www.ripe.net/ripe/mail/archives/ripe-list/2021-December/002400.html Kind regards, David Hausheer