Cybersecurity

90% of malware uses DNS — and most organisations have no visibility into their DNS traffic

DNS security monitoring gives you full visibility into outbound DNS queries, blocks malware, C2 communication, and phishing domains before they reach endpoints — the security layer most teams are missing.

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The challenges you're facing

No visibility into what domains company devices are querying — malware can operate undetected for months

Phishing and malware domains bypassing perimeter controls because DNS is unfiltered and unmonitored

Data exfiltration via DNS tunnelling completely invisible to firewall and proxy-based monitoring

Block Threats at the DNS Layer Before They Reach Endpoints

We deploy DNS security monitoring and filtering that inspects every DNS query across your environment. Known malicious domains (malware, C2, phishing, botnets) are blocked before the connection is made. Anomalous DNS patterns — sudden new domain registrations, high-entropy names (C2 or tunnelling), unusual query volumes — generate alerts for investigation. We integrate findings into your SIEM for correlation with endpoint and network data.

What you get

DNS Architecture Review

Audit current DNS configuration, recursors, forwarding rules, and identify monitoring gaps.

DNS Security Tool Deployment

Deploy and configure DNS security platform (Cisco Umbrella, Cloudflare Gateway, or open-source equivalent).

Policy & Filtering Configuration

Configure blocking policies for threat categories and allow/block lists aligned to your acceptable use policy.

SIEM Integration & Alert Rules

Forward DNS logs to your SIEM and configure detection rules for tunnelling, DGA, and C2 communication patterns.

Technologies & tools

Cisco UmbrellaCloudflare GatewayPi-holeBINDZeekSuricataElastic SIEMWazuh

Case study — anonymised

Manufacturing — 800 endpoints

Before

DNS unmonitored across 800 endpoints. Retrospective analysis found 3 endpoints had been querying known C2 domains for 6+ weeks before detection via other means.

After

DNS security monitoring deployed with SIEM integration. C2 domains blocked at DNS layer, tunnelling detection active, weekly DNS threat reports to security team.

47 malicious domains blocked in first 30 days, DNS-based threat dwell time reduced from weeks to minutes, zero successful C2 connections in 9 months post-deployment

Frequently Asked Questions

Common questions from enterprise and mid-market teams across India and internationally.

What is DNS-based C2 and why is it dangerous?

Command and Control (C2) via DNS works by encoding attacker commands and malware responses in DNS queries and responses. It bypasses firewalls that don't inspect DNS traffic and proxies that don't intercept DNS. Without DNS monitoring, malware can operate and exfiltrate data for months while appearing as normal network traffic.

Does DNS filtering slow down browsing or cause false positives?

Modern DNS security platforms like Cisco Umbrella and Cloudflare Gateway add under 2ms latency in most cases. False positives occur but are typically low (under 0.1% of legitimate domains). We configure an easy user reporting mechanism and review process to resolve them quickly.

Can you monitor DNS for remote and home workers?

Yes. DNS security clients can be deployed as lightweight agents on laptops and mobile devices, ensuring DNS monitoring applies whether users are on-site, remote, or on hotel WiFi. This is critical as remote workers bypass on-premise DNS controls.

How does this integrate with our existing SIEM?

DNS query logs are forwarded to your SIEM (Splunk, Elastic, Microsoft Sentinel, Wazuh) via syslog or API. We write detection rules for high-risk patterns (DGA domain queries, DNS tunnelling, newly registered domains) that generate actionable alerts.

Ready to get started?

Tell us about your situation and we'll respond with a tailored assessment within one business day.