Jack Gillum

Reporter

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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The Iowa Caucuses App Had Another Problem: It Could Have Been Hacked

While there is no evidence hackers intercepted or tampered with the results, a security firm consulted by ProPublica found that the app lacks key safeguards.

Iowa’s Lesson: Political Parties Are Not as Good as Government Officials at Counting Votes

Most primaries are run by state and local governments. But caucuses are different — and Iowa shows how that can be a problem.

Millions of Americans’ Medical Images and Data Are Available on the Internet. Anyone Can Take a Peek.

Hundreds of computer servers worldwide that store patient X-rays and MRIs are so insecure that anyone with a web browser or a few lines of computer code can view patient records. One expert warned about it for years.

Aggression Detectors: The Unproven, Invasive Surveillance Technology Schools Are Using to Monitor Students

In response to mass shootings, some schools and hospitals are installing microphones equipped with algorithms. The devices purport to identify stress and anger before violence erupts. Our testing found them less than reliable.

Methodology: How We Tested an Aggression Detection Algorithm

An in-depth look at software that claims to spot aggression from your voice.

Prosecutors Dropping Child Porn Charges After Software Tools Are Questioned

More than a dozen cases were dismissed after defense attorneys asked to examine, or raised doubts about, computer programs that track illegal images to internet addresses.

“Happy to Do It”: Emails Show Current FAA Chief Coordinated With Ex-Lobbyist Colleagues on Policy

As he moved through the agency’s ranks, the now-acting FAA Administrator Dan Elwell exchanged dozens of emails with lobbyists and other industry players discussing everything from rolling backing back consumer protections to airport privatization.

Facebook Won’t Let Employers, Landlords or Lenders Discriminate in Ads Anymore

The sweeping changes come two years after ProPublica’s reporting, which sparked lawsuits and widespread outrage.

Georgia Officials Quietly Patched Security Holes They Said Didn’t Exist

A ProPublica analysis found that the state was busily fixing problems in its voter registration hours after the office of Secretary of State Brian Kemp, the Republican candidate for governor, had insisted the system was secure.

File-Sharing Software on State Election Servers Could Expose Them to Intruders

A ProPublica analysis found election computer servers in Wisconsin and Kentucky could be susceptible to hacking. Wisconsin shut down its service in response to our inquiries.

The Overlooked Weak Link in Election Security

While attention has focused on the potential to penetrate voting machines, a ProPublica survey found that more than one-third of counties overseeing toss-up congressional elections have email systems that could be vulnerable to hacking.

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