In December 2020, in a joint investigation by "The Insider" and Bellingcat in co-operation with CNN and "Der Spiegel", she reported how Russian Federal Security Service (FSB) members stalked Alexei Navalny for years, including just before his poisoning in August 2020. The investigation detailed a special unit of the FSB specializing in chemical substances and investigators tracked members of the unit using telecom and travel data.