How HYAS Protective DNS Works
What Is HYAS Protect?
HYAS Protect is a cloud-native Protective DNS (PDNS) solution that stops threats before they reach your users or systems—by blocking malicious activity at the DNS layer, where nearly all internet communications begin.
What makes HYAS Protect different is its foundation: it’s built on the same infrastructure intelligence that powers HYAS Insight, giving it deep visibility into attacker behavior and adversary infrastructure. This allows HYAS Protect to block connections to malicious domains BEFORE they’re weaponized or appear on traditional threat feeds.
By intercepting and analyzing outbound DNS queries in real time, HYAS Protect delivers proactive defense against a wide range of threats, including:
Phishing and spear phishing
Malware and botnets
Ransomware and command-and-control (C2) communications
Data exfiltration
Malicious redirects and scam domains
These threats all depend on DNS communication to succeed—whether it’s to “call home,” receive instructions, or exfiltrate data. HYAS Protect stops them at the earliest possible point—before the connection is made—regardless of whether the device is in the office, remote, or part of an OT environment.
How Does HYAS Protect Work?
While most PDNS solutions rely on static, often outdated blocklists and allowlists, HYAS Protect uses real-time infrastructure intelligence to detect and block threats others miss.
At the heart of HYAS Protect is the Decision Engine, which analyzes every DNS query against HYAS’s data lake of adversary infrastructure, behavioral patterns, and global DNS activity. Each domain is evaluated and assigned a weighted risk score, determining whether it should be allowed, blocked, or logged for review.
Here’s what sets HYAS Protect apart:
Proactive threat detection based on attacker infrastructure—not just known bad domains
Industry-leading efficacy, as proven in third-party testing by AV-TEST
Custom policy control to block by category, domain, or user-defined rules
Flexible enforcement, from silent drops to user-facing block pages
Full visibility, with searchable logs and integrations into SIEM and SOAR tools
Because it operates at the DNS layer, HYAS Protect is lightweight, scalable, and deployable across IT, remote, and OT environments—without requiring endpoint agents or deep packet inspection.
Why Use HYAS Protect?
Proactively blocks threats like phishing, malware, ransomware, and data exfiltration
Leverages attacker infrastructure intelligence to detect emerging threats before they're known
Delivers high-fidelity protection with fewer false positives
Protects all environments—on-prem, remote, and OT
Easy to deploy and manage, with flexible policy controls and robust visibility
Click here to watch a short video on HYAS Protect