Originally posted on FastMail Blog:
On Sunday, 8 Nov 2015, at around 01:08 UTC, FastMail was hit by a DDoS attack that briefly made some services unavailable before we enabled mitigation strategies to block it. A further attack followed on Monday, 9 Nov 2015 at around 00:34 UTC. These attacks were accompanied by an extortion demand that threatened further attacks this week if we did not pay the attacker 20 Bitcoin (approximately US$7500).
First of all, we would like to make one thing clear. We do not respond to extortion attempts, and we will not pay these criminals under any circumstances. We have dealt with DDoS attacks before, and have recently been strengthening our defences to deal with such issues. However, there is still a chance that the attacks will cause some disruption for our users, so we are publishing this as an advance warning and to give as much information as we can on…
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