German Drone CEO Stefan Thumann Targeted by Russian Intelligence Plot
Russian intelligence services planned to assassinate Stefan Thumann, the founder and chief executive of the German drone manufacturer Donaustahl. The plot involved surveillance of Thumann's residence and company headquarters beginning in December 2025, with suspects filming the property and gathering data online.
German security agencies received a warning from a foreign intelligence service in December 2025 that Thumann was in danger. In March 2026, German police in Bavaria and Spanish police in the North‑Rhine‑Westphalia region arrested two suspects – Ukrainian Sergey N., a former mason from Kharkiv living in Germany, and Romanian Alla S., described as an amateur agent. The arrests were made after the suspects were observed photographing and filming Thumann's home. Cooperation between German and Spanish authorities prevented the planned attack.
The incident highlights the reach of Russian covert operations against defence‑industry figures in Europe and the coordinated response of Western security services.
Entities: Alla S. · Donaustahl · German Federal Intelligence Service · Russian intelligence services · Sergey N. · Serhij N. · Stefan Thumann · Stefan Tūmans
Claims
What the coverage asserts, and how well corroborated each claim is across sources.
- [● 3 SOURCES] Russian intelligence services planned to assassinate Stefan Thumann, CEO of German drone manufacturer Donaustahl. (articles 2, 3, 4)
- [● 3 SOURCES] German police in Bavaria and Spanish police in the North‑Rhine‑Westphalia region carried out the arrests. (articles 2, 3, 4)
- [● 3 SOURCES] Alla S. is a Romanian national described as an amateur agent. (articles 2, 3, 4)
- [● 3 SOURCES] The plot was prevented thanks to cooperation between German and Spanish security services. (articles 2, 3, 4)
- [● 3 SOURCES] Two suspects, Ukrainian Sergey N. and Romanian Alla S., were arrested in Spain and Germany in March 2026. (articles 2, 3, 4)
- [● 3 SOURCES] German security authorities received a warning from a foreign intelligence service in December 2025 that Thumann was in danger. (articles 2, 3, 4)
- [● 3 SOURCES] Sergey N. is a former mason from Kharkiv who lived in Germany with his family. (articles 2, 3, 4)
- [● 3 SOURCES] The suspects had been surveilling Thumann's home and company headquarters since December 2025, filming his house and gathering information online. (articles 2, 3, 4)