The North-Eastern Italy and the Polish part of the Carpathians are subject to high hydrogeological hazard due to its climatic, geological and geomorphological conformation, often inducing damages or destruction of residential development, economic and transport infrastructures. Thus, the search for cost-effective solutions for risk mitigation and slope stabilization is fundamental in both the regions. The paper introduces a research program that developed an innovative technique for landslide stabilization, named composite anchors, improvement of the Soil Nailing, which consists of installing special passive sub-horizontal reinforcements in unstable slopes. After a brief overview on the main technical aspects, two real applications of passive reinforcements on slow-moving translational landslides are proposed.