I continue to see more and more of these scare tactic emails arriving in the mailboxes of friends, customers, and colleagues.  These are, admittedly often well crafted messages designed to play on the darkest fears of humanity and they utilize some very basic techniques to build a sense of legitimacy.

This article provides a good overview of the attack/phish and hopefully will ease some concerns.

https://nakedsecurity.sophos.com/2019/03/13/final-warning-email-have-they-really-hacked-your-webcam/