(MENAFN) Hungarian Prime Minister Viktor Orban has accused Ukrainian individuals and the opposition Tisza Party of orchestrating the theft and online release of personal data belonging to 200,000 Hungarian citizens, calling it a “serious national security risk.”

Orban made the comments in a video statement on Monday, following media reports that a database containing names, addresses, and contact information from users of the Tisza Party’s Vilag organizing app had briefly appeared online.

A serious scandal has shaken Hungarian public life. The personal data of 200,000 of our compatriots were published online without their consent, Orban said. Based on current information, this data was collected by the Tisza Party. He added that analysis indicated “Ukrainian individuals were also involved in the data handling” and ordered national security officials to investigate.

The Tisza Party and its leader, Peter Magyar, denied any Ukrainian involvement in the app’s development. Magyar claimed the leak was the result of “international hackers... who are obviously backed by Russian services,” though no evidence was provided.

Reports in the Hungarian press noted that the leaked data appeared to originate from the Vilag platform itself, with early entries linked to developer and tester accounts, some bearing Ukrainian state identifiers.

Orban, a vocal critic of EU and Western military support for Ukraine, has repeatedly alleged that Brussels and Kyiv are attempting to manipulate Hungarian politics to advance the Tisza Party ahead of the 2026 parliamentary elections. Similar claims were echoed earlier by Russia’s Foreign Intelligence Service, which suggested that European and Ukrainian agencies are coordinating to influence Hungary’s political landscape.

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