I called my son to discuss this matter, he is more proficient than I in identity protection, as he needs to be, in his 'side gig' working with the courts in judgement enforcement. When mentioning the idea of taking the matter to the Sheriff's Dept. he expressed his doubts that they would be much interested in devoting time and attention to such small potatoes...knowing Sheriff deputies as I do, I had to agree. Best thing to do is nothing, my data(along with millions of people) is on the Dark Web from several data breaches. I've been doing all the prudent security steps all along, but if some corporation doesn't exercise proper computer security, that's out of my control.
I was initially rattled by this, because having worked in a prison with inmates, one of my blabber-mouth co-workers spilled the beans on where I live, turns out one of my inmate workers grew up in my home town. Before I left State Corrections I Googled myself, and went to the "people finder" websites that had my personal information, and filed takedown requests to remove my personal information. I also contacted the county tax assessor and requested my name be removed from public facing databases. That's about as good as it gets, for manually tightening up the holes on personal data .
The extortion message was in an email attachment , didn't want to open it, even-though I only use Linux I didn't want any possible virus payloads coming my way. I booted into a Linux "live" session, downloaded the attachment and took a screenshot of it: