Intelligence and National Security Alliance | 39,282 followers on LinkedIn. Building a stronger intelligence community | The Intelligence and National Security Alliance (INSA) is the leading nonpartisan, nonprofit forum for driving public-private-academic partnerships to advance intelligence and national security priorities. A 501(c)(6) membership organization, INSA strives to identify, develop, and promote collaborative approaches to national security challenges. INSA has 175 organizations in its membership and enjoys extensive participation from leaders and senior executives in the public, private, and academic sectors.