Behind the Firewall: How sherrif DNS Analyzes Malicious Queries

A deep dive into our query inspection engine: how we detect and block threats in real time with zero delay.

blog iconExpert Adviceblog icon5 min readblog iconAugust 2025
Behind the Firewall: How sherrif DNS Analyzes Malicious Queries

In today’s rapidly evolving threat landscape, traditional firewalls and endpoint protections alone are no longer enough. Cybercriminals are getting smarter—bypassing perimeter defenses and hiding in plain sight. The solution? Start at the foundation: the Domain Name System (DNS). DNS-level security is no longer a nice-to-have. It’s a non-negotiable first line of defense.

What Is DNS-Level Security?

DNS-level security protects your organization by monitoring and filtering traffic at the DNS layer—the layer that translates web addresses (like google.com) into IP addresses computers use.

By intercepting malicious requests before a connection is ever made, DNS security blocks threats before they reach your network. That means phishing links, malware domains, and data exfiltration attempts are stopped instantly.

The Threats Have Evolved. Have You?

  • 90% of malware uses DNS to enter or leave a network.
  • Phishing attacks bypass 78% of traditional firewalls.
  • Zero-day threats rely on DNS-level blind spots.
  • Attackers exploit DNS because most companies don’t monitor it closely. If your DNS is wide open, your network is too.
Ready to see what DNS security can block before it's too late?
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