I too received the threatening email (actually I received 3 of them).

I am a software developer, so I wanted to see if I could figure out how
they got my email address(es).
So I wrote a simple program to extract this info from the Registry.
Simple.
Done.
In my case I use MS Outlook.
I have 4 accounts in my Outlook.They sent an email to the first three.
Obviously they have logic in their program to do this very same thing.
(extract Outlook email info, and pass it back to the developer site).

So here's my thoughts....
They build the program with this logic inside it.
THEY provide the readme file with the instructions of how to
use one of the provided registration keys.
You download and run the program.
You use the readme file to get the id and one of the keys.
You enter that into the program to "register" it.
Bang... they now have your email account addresses and the key you used.
You now get the threatening email.

In my opinion they are attempting to defraud you (and me),
and they have extracted email account data from your computer (this is ILLEGAL),
and have now passed that on to ??????

11.April...
I also just received the same notice!
But do they really can arrest people?
Do I realy go to jail or pay 100.000$?Or they just scared people to pay for them
They have sent me 2 messages

My mail ID has been hacked by this company and I was sent down oe mail containing threats to my person.

Hello,

We noticed that you used the following pirate license key to unlock Ace Translator into full version:
02840-13301-49FFF-VJI57-DFFF4

We have logged down the IP addresses and other solid proof.

Software theft is a serious crime. If you are caught with illegal software, you may be fined and prosecuted to the full extent of the law. In fact, you may be liable under both civil and criminal law. Software copyright violators in Brazil are fined up to R$ 200.000, or sentenced to jail for up to two years.

We hope you will take this matter seriously. You can acquire valid licenses now from the webpage below:

http://AceTools.biz/purchase.html?pp=4&seq=247&b=100727

If you don't acquire a license within 7 days, we will turn over all evidence and documentation to a law enforcement agency for investigation.

Thank you for your immediate attention.

Best Regards,
Dan Smith

AceTools.biz
http://www.AceTools.biz

I also just received the same notice!!!
And I had already deleted the program before Dan Smith revealed he had hacked my e-mail account.
So has he followed through on any of his threats? Thanks for any insights you might have.