Russian secret services planned an assassination attempt on Stefan Thumann, head of German drone manufacturer Donaustahl. German security services, warned by partner intelligence agencies, prevented the attack. Two suspects, a Ukrainian man Serhii N. and a Romanian woman Alla S., were arrested in Spain and North Rhine-Westphalia. Investigations revealed monitoring of Thumann between Dec 2025 and Mar 2026, with indications of contacts between Serhii N. and Russian intelligence. Attempts to spy on Thumann's father in Bavaria were also uncovered. Thumann is under enhanced protection. The case is regularly briefed to German Interior Minister Alexander Dobrindt. Background includes prior foiled assassination attempts by Russian intelligence against German defense industry leaders since 2024.

Russian secret services planned an assassination attempt on Stefan Thumann, head of German drone manufacturer Donaustahl. German security services, warned by partner intelligence agencies, prevented the attack. Two suspects, a Ukrainian man Serhii N. and a Romanian woman Alla S., were arrested in Spain and North Rhine-Westphalia. Investigations revealed monitoring of Thumann between Dec 2025 and Mar 2026, with indications of contacts between Serhii N. and Russian intelligence. Attempts to spy on Thumann's father in Bavaria were also uncovered. Thumann is under enhanced protection. The case is regularly briefed to German Interior Minister Alexander Dobrindt. Background includes prior foiled assassination attempts by Russian intelligence against German defense industry leaders since 2024.