Final Report: DNS Outage of 5 May 2026
Final assessment, based on the initial analysis of 8 May 2026 and the comprehensive follow-up examination
Analysis of the DNS outage on 5 May 2026
During a routine DNSSEC key rollover on 5 May 2026, some non-validatable signatures were generated and distributed. As a result, validating resolvers were temporarily unable to successfully verify their DNS responses for .de domains. This led to noticeable restrictions in the accessibility of .de domains for approximately three hours. Normal
Another Successful Collaboration in Information Security Between nic.at, Switch, and DENIC
At the end of March, DENIC’s integrated management system for information security (ISMS) and business continuity (BCMS) was thoroughly reviewed by colleagues from Switch and nic.at as part of an internal audit. Are the guidelines, processes, and measures still adequate to ensure DENIC’s information security, and can
Transition audits to ISO/IEC 27001:2022 at DENIC eG and DENIC subsidiary went perfectly
In September, we and our subsidiary DENIC Services GmbH & Co. KG successfully completed the transition audits to the current version of the standard for information security management systems, ISO 27001. Our subsidiary has had its own certification since 2022, so both companies were audited separately for the transition.
What
Crisis team exercise at DENIC – When things get serious, we're ready
Crisis management exercise at DENIC – Objective: a realistic simulation to test how we as a company would respond in an emergency situation.
