Every story tagged DNS Security, curated for CIOs and IT leaders — ranked by source credibility, engagement, and freshness.
4 stories · open in the command center
SPF (Sender Policy Framework) is a critical email authentication mechanism that requires precise DNS configuration to prevent authentication failures across all organizational email; misconfigurations—even single syntax errors—can block legitimate mail delivery organization-wide, making SPF management a key IT responsibility alongside DMARC and DKIM implementation. For technology leaders, this means SPF records represent both a security control and an operational risk that demands careful governance, monitoring, and clear ownership within IT organizations to ensure email deliverability while maintaining authentication integrity.
DNS over HTTPS (DoH) enables organizations to encrypt DNS queries end-to-end, improving privacy and security while reducing exposure to DNS-based attacks and data exfiltration. Implementing an internal DoH service gives IT organizations greater control over network security, compliance requirements, and visibility into DNS traffic while protecting sensitive business communications from interception. This architectural shift requires investment in infrastructure and DNS resolver deployment but provides strategic advantages in zero-trust security models and regulatory compliance.
CERT has disclosed six serious, long-standing vulnerabilities in dnsmasq that affect most non-ancient versions, with patches and an interim 2.92rel2 release now available. These DNS/DHCP server vulnerabilities pose significant risk to network infrastructure across countless organizations, as dnsmasq is widely deployed in enterprise environments, routers, and IoT devices. IT leaders must prioritize immediate patching or upgrading to dnsmasq 2.93 (releasing within weeks) to mitigate exposure to potential DNS poisoning, service disruption, or network compromise.
A DNSSEC disruption affected all .de domain resolutions on May 5-6, 2026, creating potential service availability risks for organizations with German domain infrastructure. The incident has been resolved, but IT leaders should use this as a trigger to review DNS resilience strategies, DNSSEC validation dependencies, and domain health monitoring capabilities. This incident underscores the critical need for multi-region DNS redundancy and proactive monitoring to mitigate future ccTLD infrastructure vulnerabilities.