404. That’s an error.
The requested URL /_/+1/confirm?hl=de&url=http%3A%2F%2Fwww.spiegel.de%2Fwirtschaft%2Funternehmen%2Fa-726034.html&title=Terrorschutz%20f%C3%BCr%20Leitstellen%3A%20Regierung%20dr%C3%A4ngt%20Bahn%20zum%20Bunkerbau%20-%20SPIEGEL%20ONLINE%20-%20Wirtschaft
was not found on this server. That’s all we know.