Some discussion has been had on the subject of a particular form of it at the Spamfilter forum of my ISP, National Capital FreeNet, in recent days. Two articles came up in the course of the discussion so far. You may be interested.
https://nakedsecurity.sophos.com/2018/07/13/sextortion-scam-knows-your-password-but-dont-fall-for-it/https://isc.sans.edu/forums/diary/New+Extortion+Tricks+Now+Including+Your+Password/23866/Also, depending on which OS you use, this may or may not be of help:
https://objective-see.com/products/oversight.htmlI do wonder if the scam is intended to fundraise for further "interventions" in democratic nations' elections in some way. But that is speculation on my part.