Jack Gillum was previously a reporter at ProPublica based in Washington, D.C., covering technology and privacy.

Gillum came to ProPublica from The Washington Post, where he was part of the investigative team that dug into mismanaged taxpayer funds and troubled relief efforts in Puerto Rico. Prior to the Post, Gillum was an investigative reporter at The Associated Press, where he broke stories on the existence and location of Hillary Clinton’s private email server, as well as a U.S.-backed “Cuban Twitter” program that secretly mined data for political purposes. At the AP, he also covered two presidential races and the world of campaign finance.

Gillum began his career as a business reporter and database specialist at the Arizona Daily Star in Tucson, his hometown. He is a graduate of Columbia University's graduate school of journalism and Santa Clara University in California.

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