The Secure Internet of Things Research Program held its second annual research retreat on June 27-28, 2015. The event consisted of a mixture of talks, debate, and discussion between faculty, students, industrial affiliates, and guests. The day began with a series of short talks by faculty to give an overview of results from the past year and one detailed talk by a graduating PhD student, followed by a poster session beginning with lightning talks by students to highlight their work. The middle of the day was a debate on the tradeoff between threats to privacy and societal benefit of the Internet of Things, followed by talks on other emerging technologies that may come to interact with the Internet of Things in unforeseen ways. The day concluded with a brief overview of three research projects planned for the next year and feedback from attendees.