404. That’s an error.
The requested URL /_/+1/confirm?hl=de&url=http%3A%2F%2Fwww.spiegel.de%2Fpanorama%2Fjustiz%2Frussland-a-895821.html&title=Russland%3A%20Unbekannter%20schie%C3%9Ft%20auf%20Passanten%20-%20mehrere%20Tote%20-%20SPIEGEL%20ONLINE%20-%20Panorama
was not found on this server. That’s all we know.