Between 2023 and 2024, the frequency of Russian hybrid attacks against European Union member states increased fourfold. This alarming rise in hostile activity is part of a comprehensive analysis by the US Congressional Research Service, officially presented on August 11, 2026, which also examines the specific risks to countries on NATO's Eastern Flank.

In the specialized sections of the document dedicated to Bulgaria and Romania, the issue of systematic GPS signal jamming in the Black Sea takes center stage. The report adds that, alongside technological incursions, the Bulgarian state faces serious challenges stemming from its high vulnerability to targeted disinformation and malicious Russian influence in the information space.