Overview#
Protecting the domain name system from misuse and tampering. Includes DNSSEC, resolver filtering, sinkholing, and monitoring for malicious domains.
Core objectives#
- Establish shared definitions of DNS Security for security, engineering, and leadership teams.
- Connect DNS Security activities to measurable risk reduction and resilience goals.
- Provide onboarding notes so new team members can quickly understand how DNS Security works here.
Implementation notes#
- Identify the primary owner for DNS Security, the data sources involved, and the systems affected.
- Document the minimum viable process, tooling, and runbooks that keep DNS Security healthy.
- Map DNS Security practices to standards such as ISO/IEC 27001, NIST CSF, or CIS Controls.
Operational signals#
- Leading indicators: early warnings that DNS Security might degrade (e.g., backlog growth, noisy alerts, or missed SLAs).
- Lagging indicators: realized impact that shows DNS Security failed or needs investment (e.g., incidents, audit findings).
- Feedback loops: retrospectives and metrics reviews that tune DNS Security continuously.
Related practices#
- Align DNS Security with defense-in-depth planning, threat modeling, and disaster recovery tests.
- Communicate updates to stakeholders through concise briefs, dashboards, and internal FAQs.
- Pair DNS Security improvements with tabletop exercises to validate expectations.