As you have seen we've been under massive DDoS attacks in the past days. Once again, these are classical extortion DDoS attacks. We are able to mitigate DDoS by network filtering, however, protection and filtering also blocks some good traffic (miners), unfortunately. Attacker is probably attacking by bots. We have gathered some useful data and reported attacker to FIRST (http://www.first.org/
) and TF-CSIRT (http://www.terena.org/activities/tf-csirt/
). We are not negotiating with attackers and hopefully they will at least have a restless and disturbed sleep while the security incident groups are trying to identify them. If anybody has any info about these attackers (they are also attacking other pools) we will reward any useful information.
Thank you for understanding and thank you for using our service!
X-Mailer: Anonymous Email - https://anonymousemail.us
Date: Fri, 31 Oct 2014 15:29:37 +0100
Subject: ***Spam*** DDOS!
Your mining server is under DDoS attack.</p>
<p>Pay me 1 BTC and I will stop and you are free for lifetime of your site.</p>
My btc address: 16JEzTkXGeCFPrCoPo9hnSVZWLHMau31fg</p>
<p>DO NOT REPLY! I can't receive your emails. Pay me and I will know it's you.</p>
If you ignore me, and I don't receive your payment within 2 hours, price to stop will increase to 2 BTC and will increase for 1 BTC for every day of delay/attack.</p>