Copernicus Sentinel data is being used to study the source of persistent landslides and monitor ground movements in Romania. This Eastern European country possesses dramatic landscapes which, in turn, can pose significant landslide risks to infrastructure and lives. Using Sentinel-1, Geo-Sentinel, a remote-sensing company, employed advanced radar technologies such as InSAR to monitor landslides. Geo-Sentinel’s services allowed Geo Search, a geotechnical company, to understand problems regarding ground instability near mining sites. This study illustrates the utility of Sentinel data in detecting and analysing ground movement, and its potential impacts.