TechNet Cyber 2026

Tim Kosiba
Deputy Director
National Security Agency


Mr. Kosiba serves as the 21st Deputy Director of the National Security Agency. In this capacity, he works with the NSA’s Director and Executive Director to provide leadership in all areas of the enterprise and to represent NSA’s interests both internally and externally. Prior to his retirement from NSA in 2021, he served as Deputy Commander of NSA/CSS Georgia — the Agency’s largest Cryptologic Center. PRIOR POSITIONS Mr. Kosiba’s NSA career spanned a variety of key leadership roles across NSA and USCYBERCOM, including Special U.S. Liaison Officer in Canberra, Australia; Deputy Director of the NSA/CSS Commercial Solutions Center (NCSC); and Chief of Tailored Access Operations (now Computer Network Operations). Mr. Kosiba’s federal service began in 1989 with the Naval Criminal Investigative Service. After several years spent working in the United Kingdom, Mr. Kosiba was recruited by the FBI in 1996, which brought him to the Washington area. Following the events of 9/11, Tim dedicated his digital forensic knowledge to capturing the perpetrators of the attacks, going on to supervise one of the FBI’s largest digital forensics laboratories. He later joined the Joint Functional Component Command for Network Warfare (JFCC-NW) — the predecessor of USCYBERCOM — in 2007, where he held the role of Technical Director. Mr. Kosiba returns to NSA after serving as a cybersecurity leader in the private sector for several years. Throughout his career, he has consistently represented USCYBERCOM and NSA at the White House and forged partnerships to advance cybersecurity policy and priorities. He has received several awards from the law enforcement and the intelligence communities and is a recognized technical leader in the cybersecurity field. EDUCATION Bachelor of Science in Management Information Systems from University of Baltimore University Master of Science in Forensic Science from George Washington University

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