  Technology is increasingly used -- unintentionally (misinformation) or
intentionally (disinformation) -- to spread false information at scale, with
potentially broad-reaching societal effects. For example, technology enables
increasingly realistic false images and videos, and hyper-personal targeting
means different people may see different versions of reality. This report is
the culmination of a PhD-level special topics course
(https://courses.cs.washington.edu/courses/cse599b/18au/) in Computer Science &
Engineering at the University of Washington's Paul G. Allen School in the fall
of 2018. The goals of this course were to study (1) how technologies and
today's technical platforms enable and support the creation and spread of such
mis- and disinformation, as well as (2) how technical approaches could be used
to mitigate these issues. In this report, we summarize the space of
technology-enabled mis- and disinformation based on our investigations, and
then surface our lessons and recommendations for technologists, researchers,
platform designers, policymakers, and users.
