Topic starter
18/08/2026 2:50 pm
TL;DR: DNS spoofing remains a practical redirection technique because forged responses, low TTL values, and conflicting resolutions can still slip past weak monitoring, according to Wazuh's analysis. For identity and access teams, the risk is not just traffic diversion but credential interception and trust failure at the point of authentication.
Editorial analysis by NHI Mgmt Group, based on content published by Wazuh: “Detecting DNS spoofing attacks with Wazuh”.
Key questions
Q: What breaks when DNS integrity controls are missing?
A: When DNS integrity controls are missing, attackers can redirect traffic, intercept users, or disrupt service without changing the application itself.
Q: Why do low-TTL DNS responses and conflicting answers increase risk?
A: They increase risk because they can signal forged records that are being refreshed rapidly to evade detection.
Q: What are the signs that DNS spoofing detection is failing?
A: Common signs include destination IPs that change unexpectedly, forged responses that appear without matching queries, and low-TTL answers from untrusted resolvers.
Practitioner guidance
- Instrument DNS resolution as a security signal Forward Zeek DNS logs into the SIEM and correlate query, response, TTL, and authoritative-answer fields against approved resolvers and expected domains.
- Alert on contradictory resolution behaviour Create detections for repeated answers that change quickly, low TTLs from untrusted sources, and unsolicited responses that claim authority over domains you do not control.
- Monitor local resolution files for tampering Add file-integrity monitoring for /etc/hosts and the Windows hosts file so endpoint-level overrides cannot bypass resolver-based detection.
Bottom line: DNS spoofing remains effective when defenders treat resolution as routine traffic instead of a trust decision that must be verified.
Explore further
View Full Forum → | NHI Foundation Course → | Our Services → | Read the full analysis →
18/08/2026 3:32 pm
DNS telemetry is a control surface, not a logging by-product. Organisations that treat DNS as passive infrastructure miss the point of the article. Resolution integrity is part of access trust, because users and applications rely on the right destination being reached before authentication or transaction flow begins. Practitioners should treat DNS visibility as an active control for trust preservation, not a forensic afterthought.
A question worth separating out:
Q: How should teams govern DNS records that support identity and trust controls?
A: Security teams should classify DNS records by the trust function they support, not only by technical type. MX, SPF, TXT, CNAME, NS, and PTR records can all affect verification, routing, and service legitimacy. Put changes through review, ownership, rollback, and validation steps so DNS updates are handled like identity-adjacent control changes.
👉 Read our full editorial: DNS spoofing detection shows why DNS telemetry needs active control