The National Security Agency (NSA) has just announced the winners of the 4th Annual “NSA Competition for Best Scientific Cybersecurity Paper Competition.” This competition recognizes the best scientific cybersecurity paper published in 2015. Three of the fifty-four papers publicly nominated between December 1, 2015 and March 31, 2016 were selected for recognition: Winning paper • Nomad: Mitigating Arbitrary Cloud Side Channels via Provider-Assisted Migration written by researchers from Carnegie Mellon University and University of North Carolina. https://users.ece.cmu.edu/~vsekar/papers/ccs15_nomad.pdf Honorable mention • Increasing Cybersecurity Investments in Private Sector Firms written by researchers from the University of Maryland, College Park. http://cybersecurity.oxfordjournals.org/content/1/1/3 • Quantum-Secure Covert Communication on Bosonic Channels written by a team of researchers at University of Massachusetts, Amherst and Raytheon. http://www.nature.com/articles/ncomms9626http://cps-vo.org/group/sos/papercompetition The Best Scientific Cybersecurity Paper Competition is sponsored yearly by NSA's Research Directorate. Details about the Research Directorate is available online at: www.nsa.gov/research and the competition at: http://cps-vo.org/group/sos/papercompetition.