No. I absolutely don't believe anyone unknown calling me, no matter who he claims to be, or what the CLIP says, unless I can call back to a public number of the institution he claims to represent. CLIP just isn't secure.
I choose to risk believing for non-essential things, because security is just not convenient. But banks, government, anything where there's well reported fraud going on regularly,... no way.
Calling back is also good, because outgoing calls are automatically recorded by my operator and sent to my email, so if I'm to enter into any agreement, it's better to do it on an outgoing call.
Seems to be fixed and that it was fixed during the time he did _nothing_ and just waited. Perhaps there was a responsible disclosure but he didn't said how he did it.
I once reported an exposed AWS access key (someone posted it to StackOverflow) to AWS support and they weren't quite sure what to do with it; gave me instructions on how to disable it in the Console, but it wasn't mine.
I gave up after a couple rounds and just committed it to Github; their credential monitoring bot disabled it within seconds.
That would have prevented the author just randomly stumbling on the credentials.
No, it's not. Caller ID is not authenticated and shouldn't be depended for anything sensitive.
There are a bit over 1000 megachurches in the US. Around 50 have regular attendance over 10k, with the largest one averaging around 47k. (There are also 3000 Catholic parishes that have over 2k attendance to Sunday mass which would count as megachurches if the term didn't specifically only apply to Protestant churches).
The impression I've generally gotten is that most people attending a megachurch are from the general area that church is in. Close enough to drive to it every week. And that those who do travel a great distance to visit one do it independently and irregularly.
Compare to Kumbh Mala in India. That's held every 12 years and lasts about a month. Attendees travel from all over India to be there, with attendance of over 100 million over the month, and up to 40 million on the busiest day.
That should be a much more effective COVID spreader than all the US megachurches (and large Catholic parishes) combined, because so many people travel from all over the country to attend.
