This brief defines the concept of a mission-based authorized use standard and lists the potential results of employing it in the government’s information sharing system. The Markle Task Force identifies mission-based authorized use as a viable replacement for the outdated, pre-9/11 sharing standards and urges the Obama Administration and Congress to consider this concept in National Security policy-making. The Markle Task Force comments, “A coherent and consistently applied mission-based authorized use standard will improve information sharing to strengthen national security while protecting the privacy and civil liberties of the American people.”