I think I want to add a few points to your alert.
1. Never say "Yes" to any question on these calls. Just hang up once you figure out it's spam and even then, never say yes.
2. Get onboard with Nomorobo . Read https://www.cnet.com/how-to/screen-unwanted-calls-without-one-at-a-time-blocking/
There are folk that dis Nomorobo but here it's been fantastic. Not turning it off.
FYI folks: Don't answer those “Can you hear me?” calls...
http://www.bbb.org/detroit/news-events/bbb-scam-alerts/2017/01/bbb-warning-can-you-hear-me-scam-alert/
Additional info from Snopes:
http://www.snopes.com/can-you-hear-me-scam/
CNET article: The truth about the 'Can you hear me?' scam
It might not be as rampant as previously thought.
https://www.cnet.com/how-to/can-you-hear-me-scam/
While it is unproven and so far there has no indication that anyone has been harmed by it, just to be safe, stay vigilant.
Be safe.
Edited by Lee to include CNET article

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