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Jeff Kao

Computational Journalist

Jeff Kao is a computational journalist at ProPublica. He previously worked as a machine learning engineer at Atrium LTS, where he developed natural language processing systems for legal services. He holds a law degree from Columbia Law School, where he was the editor-in-chief of the Columbia Science and Technology Law Review, and a bachelor’s degree in systems design engineering from the University of Waterloo.

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.

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