Pexus wrote:
I went into my junk box ready to delete everything as usual. There was a threatening email saying I was going to have my browsing history exposed and that I was a pervert. The demand is for 1500$.
It's an extortion scam – more specifically, a "sextortion" one. The term "sextortion" seems to cover a variety of criminal activities – ranging from what was aimed at you, all the way up to child predators actively encouraging unsuspecting child victims to send them inappropriate images as a prelude to God-knows-what.
This U.K. Government Web site describes something that sounds exactly like what you experienced – and their advice is to not engage with the criminals.
https://www.ncsc.gov.uk/files/sextortion-scams-infographic.pdf
My surprise when all my details came up as if I’d sent it. I clicked on reply arrow and yep, my email address came up.
My mother sometimes got calls from telemarketers where the Caller ID said that the spammers or scammers were calling from her phone number. Obviously impossible, also obviously meant to bypass call filters (since who would think to block calls from their own phone number?).
As the others said, just because they can play games with the e-mail system doesn't mean they're all-knowing, or all-powerful. They just want you to think that, so you will fall for the extortion scam. And with extortion/blackmail, paying the criminals may get you in deeper, because then the criminals figure they can keep blackmailing you and keep threatening you to get you to cough up more.
I have less than 48 hours to accede to their demands to put the money into a bitcoin account. I won’t be doing that. I’ve changed my passwords and mostly use strong ones and two factor authentication.
Good! You didn't fall for it!