How Hungary used citizens’ covid data to help the ruling party

IN DECEMBER 2020, when Hungary’s health authority set up a website for citizens to register for covid-19 vaccinations, it included a tick-box for those who wanted to receive further information. Gabor Toka, a political-science professor, found it odd that the box did not specify that future communications should be about covid. To see what would happen, he ticked the box for his own registration but left it unticked for his mother’s. Some months later, when Hungary’s general-election campaign swung into gear, he found that he (but not his mother) started to get campaign emails from the ruling party, Fidesz.