I think the age of people worrying when they get an email like this may have passed as it seems pretty much everyone knows it's baloney. But I suppose they wouldn't keep trying if it didn't occasionally work (and perhaps the people it works on aren't going to be googling and finding this anyway so ultimately this may be pointless of course...).
Carnival Cruises is the parent company for a lot of cruise operators and had their database hacke, so if you've ever been on a cruise your data has likely been stolen resulting in rather a lot of spam emails. I've not noticed any other problem though, just spam.
The email below is exactly as it was sent (they may have managed to spoof someone's real email address so I have left that out).
Edit: I've reported the bitcoin wallet to ChainAbuse https://chainabuse.com/report/9cb50f02-bbe0-4a0a-b0ad-da961eba0532
You've been HACKED
<XXXXX@rinku.zaq.ne.jp>
Hello,
We wrote you an email some time ago, but you seem to have ignored it, so we resent it to you.
We are the ShinyHunters hacking group.
A few months ago, we gained access to your devices and started monitoring your online activities.
What happened:
We gained access to the Carnivalcorp.com database where you have an account and easily accessed your email.
You weren't very careful about the links you opened.
A week later, we installed an exploit on your devices, including your phone, giving us access to your microphone,
camera, keyboard, and all your data.
We have your documents, photos, browsing history, conversations, and contact list.
Among other things, we discovered that you visit adult websites and watch explicit videos.
We managed to record you and created videos of you pleasuring yourself.
With a few clicks, we can share these videos with your friends,
colleagues, and family or even make them public.
Proposal:
Send us $2000 in Litecoin (search online how to buy) to the following wallet: ltc1qua85znuqqqgfwrc5cwudp0wyk32078xzwt2xk0
You have 48 hours from the moment you open this email.
Once the payment is received, we'll remove the malware from your devices.
We'll also remove all your personal information from darkweb for you to be safe from now on.
What you should NOT do:
Do not reply (email was sent from a hacked account).
Do not contact the police or anyone else—we'll release the videos along with other stuff all over the internet.
Do not try to reset your devices—everything is stored on remote servers.
What you don’t need to worry about:
We will see your payment immediately—the wallet is generated specifically for you.
We will not share your videos or other things after payment—there is no reason to continue causing problems.
You're not the only one in this situation.
Be smart and cooperate; otherwise, you're going to regret it.