IONOS Cloud experienced a minor incident on May 15, 2026 affecting Network, lasting 4d 4h. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating May 15, 2026, 11:59 AM UTC
We are writing to inform you that we have been experiencing sporadic connection issues and substantial delays on packet delivery. Network technicians have started working on the occurrence immediately after detection and will isolate the problem and solve the issue as quick as possible. However, it is possible that there will be a certain degradation in connection quality affecting individual virtual resources. We will inform you as soon as the functionality has been restored.
- monitoring May 15, 2026, 01:18 PM UTC
A fix has been implemented and we are monitoring the results.
- resolved May 19, 2026, 04:17 PM UTC
We are marking this incident as resolved. The Root Cause of the incident was a DDOS attack on customers hosted in our infrastructure. While the attack was largely successfully mitigated by our countermeasures a intermittent saturation of an affected link resulted in an increase of package loss. Our network team has evaluated the countermeasures' effectiveness and the identified bottleneck and is currently working on technical and organizational improvements to further decrease detection time for comparable events.