Ms. Katherine “Katie” Arrington is Performing the Duties of the Department of Defense Chief Information Officer.  In this capacity, she serves as the primary advisor to the Secretary of Defense for information management/Information Technology (IT); information assurance, as well as non-intelligence space systems; critical satellite communications, navigation, and timing programs; spectrum; and telecommunications.
Prior to assuming this role, she served as the Deputy CIO for Cybersecurity. In this role she provided expert policy, technical, program, and defense-wide oversight support to the DoD CIO on all cybersecurity matters. She was responsible for leading the DoD-wide cybersecurity program, partnering with industry to improve cybersecurity and information sharing and represented the Secretary of Defense and DoD CIO in international discussions and negotiates on cybersecurity topics in both bilateral and multi-lateral (alliance and coalition) channels. 
Before assuming her position as DoD DCIO(CS), Ms. Arrington was the Senior Vice President of External Affairs at Exiger, where she mobilized issues of universal consensus, including supply chain visibility, Artificial Intelligence (AI), and national security. She also ran for election to the U.S. House of Representatives for South Carolina's 1st Congressional District in 2022.
A leading expert in policy and technology with extensive experience building relationships and coalitions across the public, private and nonprofit sectors, Ms. Arrington was the first DoD CISO for the Office of the Undersecretary of Defense for Acquisition and Sustainment (OUSD(A&S)). She served as the central hub and integrator within OUSD(A&S) to align acquisition and sustainment cyber strategy and efforts to enhance cyber security within the Defense Industrial Base. She led the White House COVID-19 Supply Chain Task Force for Acceleration as well as the team that created the Cybersecurity Maturity Model Certification (CMMC).
Prior to her role as CISO for OUSD(A&S), Ms. Arrington had an extensive career as a legislator and senior cyber executive in private industry. She was a 2018 candidate for the US House of Representatives for South Carolina and served for two terms as a South Carolina State Representative. She has extensive experience in cyber strategy, policy, enablement, and implementation across a wide range of business sectors and governmental levels. She has over 15 years of cyber experience acquired through positions at Booz Allen Hamilton, Centuria Corporation, and Dispersive Networks. These positions have given her a unique experience of supporting and working with the government at large, small, and non-traditional contracting firms.

Mr. Evanina currently serves as Founder and CEO of the Evanina Group advising CEOs and Board of Directors on strategic corporate risk. Mr. Evanina provides a wide array of elite strategic risk consultation services and tabletop exercises to Boards of Directors, CEOs, and senior decision makers operating within a very complex and competitive global economy and with nefarious nation state actors. Clients include corporations within energy, financial services, telecommunications, biomedical, technology, private equity, national security, and retail sectors.

Mr. Evanina currently serves on multiple advisory boards and is an instructor at the University of Chicago’s distinguished Graham School.

Mr. Evanina frequently appear in national news outlets (television, print, op-eds) advising on threats, vulnerability and mitigating strategies.

Previously, Mr. Evanina was nominated by President Trump and subsequently confirmed by the U.S. Senate on May 6, 2020, to be the first Senate-confirmed Director of the National Counterintelligence and Security Center (NCSC). Mr. Evanina served as the Director of NCSC since June 2, 2014. In this position, he was the head of Counterintelligence (CI) for the U.S. Government.

Mr. Evanina was responsible for leading and supporting the CI and security activities of the US Intelligence Community, the U.S. Government, and U.S. private sector entities at risk from intelligence collection or attack by foreign adversaries. Under NCSC, he oversaw national-level programs and activities such as the National Insider Threat Task Force; personnel security and background investigations; information technology protection standards and compliance; CI cyber operations; supply chain risk management; threat awareness to sectors of the US critical infrastructure; national-level damage assessments from espionage or unauthorized disclosures, CI mission management, and national CI and security training programs.

Under Mr. Evanina’s leadership, NCSC produced the President’s National Counterintelligence Strategy of the United States of America 2020, which has been instrumental in raising foreign intelligence threat awareness to critical infrastructure sectors and the private sector executives regarding supply chain, economic security, cyber, and malign foreign influence.

Mr. Evanina chaired the National Counterintelligence Policy Board, and the Allied Security and Counterintelligence Forum comprised of senior CI and security leaders from Australia, Canada, New Zealand, and the UK. Mr. Evanina also served as Chair of the NATO Counterintelligence Panel.

Prior to his selection as the Director of NCSC, Mr. Evanina served as the Chief of the Central Intelligence Agency’s (CIA) Counterespionage Group.