On July 3, 2015, Rücker over-ruled the election of Katrin Nyman-Metcalf, the Estonian candidate ranked first by a "consultative group" of five ambassadors – from Poland, Chile, Greece, Algeria and chaired by Saudi Arabia – for the office of the United Nation's first special rapporteur on digital privacy after activist groups said she would not be a strong enough critic of U.S. surveillance.
On July 3, 2015, Rücker rejected the selection of Katrin Nyman-Metcalf as the first UN special rapporteur on digital privacy due to concerns raised by activist groups about her perceived lack of criticism towards U.S. surveillance practices.