The community is currently hosted in the #vertex-intel-sharing channel in the Synapse users slack. You may join the slack via: https://v.vtx.lk/slack. Please DO NOT directly invite people to the channel. Direct them to this page to request membership. Once you are added to the Slack channel, you will receive an email invite with a magic link to log into the Vertex Intel-Sharing Synapse Instance (VISI).