Complete DNS Defence with DNSSight & HYAS

DNSSight links each DNS query back to the exact device, user, and process—out-of-band, with zero impact on performance.

Why Both Layers

See Every Lookup, Stop Every Threat: HYAS + DNSSight in Action

Working together, HYAS Protective DNS and DNSSight stop phishing, malware, ransomware, and C2 at resolution and identify who initiated each lookup. DNS’s ephemeral design often hides ownership.

DNSSight restores it so every blocked or allowed signal becomes a decision backed by evidence without requiring agents.
Prevention is immediate, investigations move faster, and policy confidence grows.

Results at a Glance
The Closed Loop

End-to-End DNS Security from 
Detection to Investigation

Do full investigations in DNSSight or, alert to SIEM, export to ITSM only for retention, routing, or reporting needs.

Enforce

HYAS applies policy at resolution, targeting the phone-home step attackers rely on.

Attribute

DNSSight records the responsible device, user, and process.

Detect early

First-Time Visit highlights never-visited domains at first touch.

Validate coverage

Access Guard exercises detections and records pass or fail across enforcement points.

Investigate

Enriched events pushed to SIEM enable rapid investigation.

What HYAS Brings

HYAS Prevention: 
Stop Threats at the Source

  • Blocks malicious and policy violating domains at resolution, including phishing, malware, and ransomware.
  • Targets attacker communications and cuts off command and control early.
  • Detects risky patterns such as DNS tunnelling at the DNS layer.
  • Fits into existing stacks with straightforward deployment and integrations.
our features

First-Time Visit

Your DNS traffic can tell stories—about hidden revenue, untapped efficiency, and risks neutralised before they had a name.

Access Guard

Benchmark your existing security. Evidence, not guesses.

Behind-the-VPN Insight

Maps GlobalProtect and AnyConnect IP pools back to real users. The tunnel is no longer a cloak.

Early DNS Interruption

Early interruption of risky infrastructure and staged domains at resolution.

Faster Triage, Fewer Pivots

Faster triage with fewer pivots across DHCP, VPN, IdP, and EDR.

Evidence That Travels

Evidence that travels to audit and legal without rework.

Seamless Security, 
Zero Disruption

Non-disruptive adoption without agents or topology changes.

DNS Tunnelling Blocked at Resolution
SCENARIO 01

Owner and process are recorded; follow up is targeted, not stitched by hand.

Allowed But Suspicious
SCENARIO 02

First-Time Visit sends a contextual alert to SIEM; when a vital device gets an update from a new domain, the investigation starts immediately.

VPN Ambiguity
SCENARIO 03

The user behind shared VPN egress is named for each risky lookup; no more guesses or manual cross-checks.

Architecture and Operations

HYAS handles enforcement on the data path. 



DNSSight ingests DNS, DHCP, identity, VPN, and EDR context. Investigations run without changing routing. Incidents stream to SIEM when needed, and timelines export to ITSM.

FAQ

Does DNSSight block traffic?

No. HYAS provides enforcement at DNS resolution. DNSSight attributes events and validates controls.

Is a specific integration required?

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Will network mapping change?

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Can this run without SIEM?

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How does Access Guard demonstrate HYAS value?

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Ready to own your DNS narrative?

Our engineers will connect, deploy, and show real data
—all before your next meeting.

Ready to own your DNS narrative?

Our engineers will connect, deploy, and show real data
—all before your next meeting.

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