Heimdal DNS Security (Endpoint)
Stop threats at the connection level – before they reach your devices
If a bad link gets clicked, the problem often starts with a connection.
Heimdal DNS Security helps block malicious domains and risky traffic before downloads, scripts or malware have a chance to run.
It works quietly in the background, protecting users wherever they are – office, home or on the move.
A convincing link. A quick click.
Another chance to stop the threat.
Your staff should not have to spot every dangerous link. Heimdal DNS Security helps block connections to malicious websites and infrastructure, adding protection when a convincing message or compromised website catches someone out.
For small businesses and schools, that means another layer between an everyday click and a costly disruption. Black Swan helps you put it in place and fit it around the way your organisation works.
Give threats fewer opportunities to get through
Antivirus protects the device. DNS security adds control over the destinations it connects to. Together, they give you more opportunities to interrupt an attack, from a link leading to a malicious site to malware trying to contact its controller.
Help stop dangerous connections
Block destinations identified as malicious before a device can use them to download harmful content or communicate with an attacker.
Support your people
Give staff a protective layer behind them when a suspicious link is difficult to spot. Security should allow for people having a busy day.
Take protection beyond the office
With the endpoint module installed on supported laptops, DNS protection follows the device between networks, including when staff work from home.
Make suspicious activity easier to investigate
Connection information and process context help the person investigating understand what tried to connect and where to look next.
Why choose Heimdal through Black Swan?
Heimdal is a strong option when you want DNS protection to work alongside a wider set of security controls. Its platform brings DNS security, endpoint protection, ransomware encryption protection and patching into the same ecosystem, with modules selected around your needs.
That gives smaller organisations a practical route to layered protection. Black Swan helps you choose the right combination, configure it and agree who looks after it. You have someone to discuss the whole setup with, including how it fits with the tools you already use.
Useful on its own. More options around it.
Add DNS protection alongside your existing security, or bring it together with other Heimdal controls as your needs grow.
A straightforward package
Cygnet Shield combines DNS protection, NGAV, ransomware encryption protection and patching. It gives you a clear starting point for covering several everyday risks.
Two ways to get in ransomware’s way
Heimdal DNS Security and Ransomware Encryption Protection address different stages of an attack. Combining them gives you protection against both malicious connections and malicious encryption activity.
DNS Security helps block the connection
It helps stop devices reaching malicious infrastructure used to deliver threats or communicate with attackers.
Ransomware Encryption Protection targets the encryption
REP is designed to detect and stop malicious encryption behaviour on the device, adding a specialist layer if a threat gets that far.
These are separate modules, included together in Cygnet Shield. They form part of a wider approach that also includes tested backups, secure accounts and a response plan.
Who is Heimdal DNS Security a good fit for?
Small businesses with busy teams
You want stronger protection against malicious links without expecting everyone to become a cyber security expert.
Schools with stretched IT resources
You need an additional security layer for supported staff devices, alongside your school’s safeguarding filtering and monitoring arrangements.
Organisations with remote staff
You want endpoint DNS protection to follow supported laptops beyond the office network.
Teams already using Heimdal
You want to extend your protection within the same platform and bring more of your security administration together.
What do IT security administrators say about Heimdal XDR’s DNS security and ransomware protection?
Public DNS Security reviews include positive experiences of blocking malicious redirects, alongside practical feedback about tuning and administration. For example, a Gartner Peer Insights review from October 2020 describes protection against unexpected redirects and mentions some false positives. That review covers the earlier Thor Foresight product, so it offers historical context rather than a verdict on today’s full XDR platform.
For ransomware protection, it is useful to distinguish the modules: DNS Security helps block malicious connections, while REP targets malicious encryption. A review of one does not measure the other.
Our view at Black Swan: the appeal is having complementary layers available in one platform, backed by help choosing and configuring them. We supply and support Heimdal, and can explain how that combination would fit your organisation.
Read the DNS Security reviews on Gartner Peer Insights and Capterra. Reviews reflect individual experiences and may cover older versions. Sources checked on 23 September 2026.
We help turn the software into a working setup
Choose the right cover
We look at your devices, working arrangements and existing protection, then recommend where DNS security and other controls fit.
Get the configuration right
We help with deployment and settings, including how protection works with your applications, internal systems and remote connections.
Make support straightforward
We agree how staff raise issues and how legitimate blocked sites are reviewed, so there is a clear route to getting help.
Make responsibility clear
We agree who manages the service and follows up alerts. If you need 24/7 monitoring and response, we can discuss the managed service options.
Where this fits in our wider Heimdal security solutions
DNS security is strongest when it works as part of a layered approach. It helps stop risky connections early, while the rest of the stack strengthens the device, closes software gaps, and reduces the impact if something still slips through.
Heimdal NGAV
Protect the device itself with a stronger antivirus and behavioural detection layer.
Heimdal REP
Add another layer designed to stop file encryption if something still gets through.
Patch & Asset Management
Reduce avoidable risk further by keeping software updated and closing known gaps.
Cygnet Shield
Get DNS Security, NGAV, patching and wider protection wrapped into one joined-up package.
Common questions
Do we still need antivirus?
Yes. DNS Security and antivirus complement each other: one helps block malicious destinations, while the other protects activity on the device.
Can it help prevent phishing?
Yes. It can block access to destinations identified as malicious, giving staff another layer of protection after a click. Email security, secure sign-in and staff awareness remain part of the wider picture.
Does it work away from the office?
Yes, the endpoint module provides DNS protection on supported devices across different networks. We can check your devices and remote working setup as part of deployment.
Is ransomware protection included?
DNS Security is a separate module from Ransomware Encryption Protection. Our Cygnet Shield package includes both, alongside NGAV and patching.
Can Black Swan help manage it?
Yes. We can discuss the setup and ongoing support you need, with responsibilities agreed from the start. A 24/7 monitoring and response service is a separate option.
Put another layer between your people and the threat
Let’s look at how Heimdal DNS Security could protect your organisation. In a free 30-minute call, we can discuss your current setup, answer your questions and explain the options, including Cygnet Shield.
Want the technical detail?
Explore Heimdal’s DNS Endpoint documentation and the Ransomware Encryption Protection product sheet, or ask us to talk you through the capabilities relevant to your setup.
Meet Kevin: Founder of Black Swan
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