Aha, I have seen that once. So is that what they are trying to show, which I don't see?
I find it interesting they don't try to impersonate the site or anything, but very clearly say it's a telkomsel-issued certificate (tepat/baik is something like 'good' or 'appropriate internet' iirc?)
Being this naive as ISP is just astounding. I've seen similar weirdness from socialwifi hotspots here.