404. That’s an error.

The requested URL /_/+1/confirm?hl=en&url=http://www.linformatique.org/mwc-2014-la-securite-en-invite-cache.html&name=MWC+2014+%3A+la+s%C3%A9curit%C3%A9+en+invit%C3%A9+cach%C3%A9 was not found on this server. That’s all we know.