As in past years, we solicit systematization of knowledge (SoK) papers that evaluate, systematize, and contextualize existing knowledge, as such papers can provide a high value to our community. Suitable papers are those that provide an important new viewpoint on an established, major research area, support or challenge long-held beliefs in such an area with compelling evidence, or present a convincing, comprehensive new taxonomy of such an area. Survey papers without such insights are not appropriate. Submissions will be distinguished by the prefix “SoK:” in the title and a checkbox on the submission form. They will be reviewed by the full PC and held to the same standards as traditional research papers, but they will be accepted based on their treatment of existing work and value to the community, and not based on any new research results they may contain. Accepted papers will be presented at the symposium and included in the proceedings.