Erpresser drohen Webseiten mit DDoS-Angriffen

Seit einigen Tagen versenden Erpresser massenhaft E-Mails an Webseiten-Betreiber, in denen mit einem massiven DDoS-Angriff gedroht wird, falls diese nicht 3 Bitcoins (etwa 1200€) zahlen. Auch einige unserer Kunden haben eine solche Drohung erhalten. Es gibt bisher jedoch keine Hinweise auf tatsächlich erfolgte DDoS-Angriffe, wir halten diese Drohung daher für einen Bluff. Sie sollten nicht zahlen.

Die E-Mail lautet wie folgt:

Betreff: DDOS ATTACK !
Von: RedDoor <Reddoor@openmailbox.org>

Hello,

You are going under DDoS attack unless you pay 3 Bitcoin.
Pay to **********************************
       
Please note that it will not be easy to mitigate our attack, because our current UDP flood power is 400-500 Gbps.

Don't worry, it will not be hard (we will try not to crash it at this moment) and will stop in 10 minutes. It's just to prove that we are serious.We
are aware that you probably don't have 3 BTC at the moment, so we are giving you 24 hours to get it and pay us.
Find the best exchanger for you on howtobuybitcoins.info or localbitcoins.com You can pay directly through exchanger to our BTC address,
you don't even need to have BTC wallet. Current price of 1 BTC is about 415 USD, so we are cheap, at the moment. But if you ignore us,
price will increase.
IMPORTANT: You don't even have to reply. Just pay 3 BTC to **********************************
- we will know it's you and you will never hear from us again. We say it because for big companies it's usually the problem as they don't
want that there is proof that they cooperated.
If you need to contact us, feel free to use some free email service.
But if you ignore us, and don't pay within 24 hours, long term attack will start, price to stop will go to 10 BTC and will keep increasing for
every hour of attack.
Many of our "clients" believe that if they pay us once, we will be back.
That's not how we work - we never attack the same target after we are paid.
If you are thinking about reporting this to authorities, feel free to try. But it won't help. We are not amateurs.
REMEMBER THIS: It's a one-time payment. Pay and you will not hear from us ever again!
We do bad things, but we keep our word.
Thank you.