Campo started his professional coaching career on Jimmy Johnson's Dallas staff in 1989 as a defensive assistant. He became secondary coach in 1991, defensive coordinator in 1995 and head coach in 2000.
"We welcome Dave back to the organization," said owner Jerry Jones. "We viewed these openings (on the coaching staff) as an opportunity to bring in the very best coaches available with a strong emphasis on NFL coaching experience."
Campo guided defenses finished in the Top 10 in the league in total defense four of the seven years he was a coordinator and once as a head coach. Throughout his 19 years as an NFL coach, Campo has been a part of three Super Bowl championship teams (XXVII, XXVIII and XXX).
The Cowboys secondary finished the 2007 season tied for sixth in the league with 19 interceptions and 13th in pass defense.