Unsettling indeed... I just visited the URL you linked and it states "Manually moved to security.proxy by LIGHTSPEED\lori at 9/10/2014 10:08 AM (Embedded player allows users to view youtube via https)".

I believe the justification is technically accurate (and Google's embedded Youtube player is http only, even when searched thru https) I don't see how using https for watching Youtube could be a security risk.
posted by dserodio 3 years and 10 months ago Link

I'm thinking that it's something to do with their firewall software being unable to block websites using SSL (it sometimes returns an error rather than a block page). But this is somewhat irrelevant as they do not filter traffic from YouTube, at least I think not.
posted by TheAdamGalloway 3 years and 10 months ago Link