When I click on the "i", I see a message: your connection to this site is not private
There is a clickable "details" which, when I click on it, gives a list of www sites -- four or five of them, most with strange combinations of letters that don't mean anything.
Unfortunately, I didn't write anything down and right now when I tried to duplicate what happened day before yesterday, what comes up on details is message saying details available when reload, which when I do that gives me the url of the site I'm on, that site's support link and google-analytics.com
Just now I tried one that was insecure yesterday and it is again today and details gave me:
Non-secure origins is the url of site i went to http://wfto.com
and under that it says Secure Origins and lists two with green dots in front of them:
https://pbs.twimg.com and https://cdn.syndication.twing.com
This is more reassuring than earlier when I posted the question about being hacked -- then I was getting a lot of "alphabet soup".
BUT I'm still getting sites that say they are not private when that's never happened before.
Thanks for an advice you can give me....