Someone mentioned that an HTTPS link to a website of mine would not open, while the same request sent as plain HTTP worked normally. That would be something quite new — HTTPS requests to my site were working as recently as last night; I know because I made many of them while writing a webpage.
So I looked up some other sites hosted by Yahoo — choosing some that
Yahoo uses to advertise its hosting service (at
http://smallbusiness.yahoo.com/webhosting), sites I could be sure are
indeed currently resident at Yahoo. I confirmed independently that they
are hosted there:
whois lists yahoo.com name servers for all of them.
Among the sites are:
etc. Indeed, all open only with HTTP, not HTTPS.
It may, of course, be an anomalous outage of some sort; none of the sites I checked actually supports secure connections for payment. But my untowardly suspicious mind imagines the problem to be connected to today's various blackouts in protest against SOPA. The URLs I use to work on my site, as well as one of Yahoo's secure sites for its own business (https://order.smallbusiness.yahoo.com/order/choosedomain?), have no trouble being accessed by HTTPS, which suggests that this is not a Yahoo-wide problem.