A major DNS outage affected Germany's .de top-level domain on May 5, 2026, caused by a malformed DNSSEC signature served by DENIC, the official registry. The issue made millions of .de websites unreachable for users on DNSSEC-validating resolvers like Google Public DNS and Cloudflare 1.1.1.1, significantly impacting German e-commerce, news sites, and banking services until Cloudflare implemented a temporary workaround.
Background
DNSSEC (Domain Name System Security Extensions) is a security protocol that adds cryptographic signatures to DNS records to prevent DNS spoofing and cache poisoning attacks. When a DNSSEC signature is invalid, validating resolvers will refuse to serve the domain to prevent potential security risks.
- Source
- Lobsters
- Published
- May 7, 2026 at 06:42 PM
- Score
- 8.0 / 10