This could be a browser warning, but it seems like it’s coming from Discourse:
If this was from Discourse, how about a warning before you send out mass invites that they’ll receive a scary sketchy SSL warning with a recommendation to get SSL before inviting out?
We only launched our forum not long ago and were planning to get SSL in a few weeks. I would’ve definitely waited. It’s sort of an overdramatic message, as this applies to any site without SSL (http).
Even if it’s browser based then… should still show a warning that some browsers may do this. However, just a heads up - this sucks after sending out 2300 invites from our mailing list don’t let others make my mistake.
SSL is great practice – i have it for all my sites except my forum because it’s newer and haven’t got around to it yet.