Between December 17th to December and 20th we suffered several DDoS attack affecting Greenhost platform availability at different levels.
2020/12/17 - 09:10 UTC DDoS attack started
The attack was targeted at a Greenhost customer. The attack unexpectedly also affected also other parts of the network. A significant amount of Virtual Servers had to be rebooted afterwards, including some providing services for shared services.
Management and core infrastructure were not impacted.
2020/12/19 - 23:11-00:12 UTC DDoS attack
It may have caused unavailability of some systems or long latency on connections
2020/12/20 - 12:37-13:37 UTC DDoS attack
Systems were unavialable
2020/12/21 - 16:30-17:16 UTC Issue with DNS resolution
Systems were unavailable due to a change on our DNS setup which made DNS resolution not work properly
The main cause was a large scale DDoS attack which targeted at least one of our customers and after that towards Greenhost servers as well. This included the Greenhost website as well as our nameservers were targeted.