NISTIR 8041, Proceedings of the Cybersecurity for Direct Digital Manufacturing (DDM) Symposium is now available. Direct Digital Manufacturing involves fabricating physical objects from a data file using computer-controlled processes with little to no human interaction. This publication contains speaker abstracts, presentation summaries and slides, and working session results of a one-day symposium hosted by NIST on February 3, 2015 to explore cybersecurity needed for DDM.