Many individuals attended these workshops and contributed to the writing of this report. They are named in the report itself.Over the period of 2010‐2011, a series of two workshops were held in response to NSF Dear Colleague Letter NSF 10‐050 calling for exploratory workshops to consider requirements for Scientific Software Innovation Institutes (S2I2s). The specific topic of the workshop series was the potential benefits of a security-‐focused software institute that would serve the entire NSF research and development community. The first workshop was held on August 6th, 2010 in Arlington, VA and represented an initial exploration of the topic. The second workshop was held on October 26th, 2011 in Chicago, IL and its goals were to 1) Extend our understanding of relevant needs of MREFC and large NSF Projects, 2) refine outcome from first workshop with broader community input, and 3) vet concepts for a trusted cyberinfrastructure institute. This report summarizes the findings of these workshops.This material is based upon work supported by the National Science Foundation under grant number 1043843. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science
