Philip Mudd became the first Deputy Director of the National Security Service (NSS) within the Federal Bureau of Investigation on August 12, 2005. Mudd was then serving as Deputy Director of the CIA's Counterterrorism Center. 
NSS Director Gary M. Bald and Mudd "will oversee the FBI’s counterterrorism, counterintelligence, and intelligence programs, which are being consolidated under the new NSB. They will be responsible for the FBI’s national security mission, including the continued development of a specialized national security workforce. Mr. Bald will be the lead FBI official responsible for integrating the FBI’s national security mission with the Director of National Intelligence (DNI) and the Intelligence Community." 
Philip Mudd, according to his official profile, "joined the CIA in 1985 as a leadership analyst responsible for South Asian issues and continued as a political analyst specializing on India and Sri Lanka until the early 1990s. He began work at the CTC during 1992-95, focusing largely on terrorism in the Middle East with an emphasis on Iranian state-sponsored terrorism. He later joined the National Intelligence Council for a tour as Deputy National Intelligence Officer for Near East and South Asia during 1995-98; his portfolio on the Council included interagency analysis on Iranian and South Asian issues. He worked as the Executive Assistant to the Associate Deputy Director for Intelligence in 1998-99 and then spent two years as chief of CIA’s analytic group directed against Iraq.
"Mr. Mudd returned to the CIA in January 2002 from the Near East Section of the White House National Security Council (NSC), where he served as the Director responsible for Gulf and other Middle Eastern issues. His NSC tour concluded with his joining Ambassador James Dobbins in the U.S. effort to reconstitute a new government in Afghanistan.
"Mr. Mudd currently serves as second-in-charge of the CTC, which has responsibility for all-source analysis and global clandestine operations on subjects ranging from al-Qa’ida’s leadership to Hizballah to terrorists’ use of chemical and biological weapons.
"Mr. Mudd is the recipient of more than a dozen Exceptional Performance Awards from CIA. He also was one of the two first-ever recipients of the Langer Award (November 2002), which recognizes superior achievements in CIA’s analytic directorate, and the Director’s Award (July 2004), the highest achievement award personally given by the Director of the Central Intelligence Agency."
- "FBI's counterterror chief to run new National Security Service," Associated Press (San Diego Union-Tribune), August 12, 2005.
- Philip Mudd Intelligence Online