Michael Vincent Hayden is a retired United States Air Force four-star general and former Director of the National Security Agency, Principal Deputy Director of National Intelligence, and Director of the Central Intelligence Agency. He also serves as a professor at the George Mason University – Schar School of Policy and Government. Hayden currently co-chairs the Bipartisan Policy Center's Electric Grid Cyber Security Initiative.
He was Director of the National Security Agency from 1999 to 2005. During his tenure as director, he initiated and oversaw the NSA surveillance of technological communications between persons in the United States and foreign citizens who allegedly had ties to terrorist groups, which resulted in the NSA warrantless surveillance controversy. In 2020, a federal court ruled that the NSA program was illegal and possibly unconstitutional.
On April 21, 2005, then Lt. Gen Hayden, was confirmed by the United States Senate as the first Principal Deputy Director of National Intelligence and awarded his fourth star-making him "the highest-ranking military intelligence officer in the armed forces".