Trust, privacy, and safety are critical to learning in an open online world. How can learners exercise control over who sees and uses their data? What tools do they need to navigate, collaborate, and learn online with confidence? What solutions will foster greater civility and respect in online learning environments? Creating safe, optimized, and rewarding learning experiences is one of five principles included in the Aspen Institute Task Force report, Learner In The Center Of A Networked World. If “students should have safe and trusted environments for learning,” as written in the report, how do we go about making that a reality for learners of all ages? The HASTAC/MacArthur Foundation Trust Challenge: Building Trust in Connected Learning Environments is a call-to-action and a response to findings and recommendations based on the landmark Aspen Task Force Report. The Trust Challenge is an open, international opportunity that will award up to $1.2 million to institutions and organizations with scalable, innovative, and transformative exemplars of connected learning that bridge technological solutions with complex social considerations of trust. The Trust Challenge application window opens September 3, 2014 and the deadline to apply is November 3, 2014. Visit http://dmlcompetition.net to learn more.