This report contains a brief summary and collects highlights from the individual sessions, with links to the presentation slides. More detailed meeting minutes are also available. One of the take-aways was that some features may simply too dangerous even when gated behind permissions prompts – when we add new features to the web platform, we need to ask “should we do this (at all)”. Another outcome of the workshop was “Adding another permission? A guide”, a whitepaper for feature developers written Program Committee member Nick Doty based on the discussions at the workshop.