Kurson is co-author with former Mayor of New York City Rudy Giuliani of Leadership. Published in October 2002, Leadership became an immediate best seller, spending twenty-five weeks on the New York Times Bestseller List, including five at Number One. With over a million copies in print, Leadership garnered wide praise from critics, including glowing reviews in the New York Times ("a confident, dynamic primer on basic business ethics and grace under pressure"), the New York Times Book Review ("sturdy and leavened with flashes of wry wit"), and Business Week ("blustery, unapologetic, and marked by an obvious passion").

From Jan. 1, 2002 — Dec. 31, 2006, Kurson served as the Deputy Director of Communications for Giuliani Partners, the consulting company founded by Rudy Giuliani. Kurson wrote speeches and editorials with Giuliani and traveled with him to a dozen countries and nearly every state. Giuliani's speech to the 2004 Republican National Convention, written with Kurson, was broadcast on national television and earned praise as the standout speech of the convention. Kurson's published work with Giuliani includes editorials in Time, Newsweek, the New York Post, and a full-page editorial about European anti-Semitism in the New York Times that followed a meeting at the State Department with Colin Powell and the American Ambassador to the Organization for Security and Co-operation in Europe. Kurson also collaborated with the former Mayor on his speech at the 2008 Republican National Convention, joined by John Avlon.

Giuliani presidential campaign

Kurson served as Chief Operating Officer during Rudy Giuliani's unsuccessful 2008 campaign for the Republican presidential nomination. Kurson was among the first hires of the Rudy Giuliani Presidential Committee, responsible for the Mid-Atlantic Region -- New Jersey, Delaware, and Maryland. In May 2007, he was promoted to Chief Operating Officer, reporting to Michael DuHaime. He served in this role until Giuliani withdrew from the race on January 30, 2008. In November 2007, during a debate about Jewish issues with surrogates for Sen. John McCain and Gov. Mitt Romney, Kurson said, "if Bill Clinton was 'the first black president,' then the former New York mayor would be the first Jewish president."

Kurson was the founder of greenmagazine.com and Green Magazine, a personal finance site and magazine that was acquired by Bankrate in 1999. The Industry Standard and the New York Times ran substantial profiles of Kurson in 2000. Yahoo! Internet Life named Green to its list of "100 best websites for 2001," featured on its cover.

Doubleday published Kurson's first book, The Green Magazine Guide to Personal Finance] in April 1998 as its lead Spring paperback title. It enjoyed positive reviews/mention in Worth, Wired, Playboy, Publishers Weekly, Detroit News, Salon.com and elsewhere.

Kurson remains a contributing editor at Esquire, where for five years (1997—2001), his monthly section, " Green," covered the world of investing.

Kurson is the co-author with CNBC television personality David Faber of The Faber Report, published by Little, Brown in 2002.

Kurson is also the co-author of the personal memoir of biotechnology executive John Crowley entitled Chasing Miracles: The Crowley Family Journey of Strength, Hope and Joy. It was published by New Market Press in January 2010 to coincide with the release of Extraordinary Measures, the film dramatizing Crowley's work to find a treatment for his two youngest children who were diagnosed with Pompe Disease.

Ken Kurson graduated from Glenbrook North High School in Northbrook, Illinois in 1986. In high school, he led three-piece punk group Circles, whose tape The Defenestration of Prague earned a rave review from influential punk fanzine Maximumrocknroll, which noted that the song "War Heroes is an instant classic." From 1986 - 1990, Kurson played bass for the legendary Chicago rock band, Green_. He is the younger brother of bestselling author Robert Kurson. While playing with Green, Ken wrote a song called "My Sister Jane" about his sister, the former Jane Kurson (now Jane Glover), who is not the same person as the film editor Jane Kurson, who edited Neighbors and Bad Girls. The song appears on Green's third album, White Soul. After leaving Green in 1990, Kurson founded The Lilacs with David Levinsky. Their first EP, The Lilacs Love You, was produced by Material Issue front man Jim Ellison. That release was followed by another 7", The Lilacs Hate You. Their full-length CD The Lilacs Rise Above the Filth was produced by Brad Wood and appeared in January 1992. Kurson lives in South Orange, New Jersey.