I had several, sporadic 'secure connection could not be established' yesterday while trying to open HN, amongst others. Painfully slow page load times across the board, too(Craigslist, Monoprice,weather.gov, etc) Still may be my buggy phone SIM...

wait, buggy phone sims is a thing?

Sorta. When I changed phones I cut my micro SIM down to nano size. Cut a wee bit too much off and it now can slide off contacts if jarred... gotta get a new SIM.