Goodbye, malicious sites
DNS filtering for Swiss SMEs
Secure DNS is a DNS filtering (protective DNS) service from EXYS in Bioggio, Ticino, with the core of the service hosted in Switzerland. It blocks phishing, malware and DGA domains before a connection is even made, for every device on your company network.

Block phishing and malware at DNS level
Every connection starts with a DNS lookup. Secure DNS checks each name against a database of bad domains that EXYS updates every day from third-party feeds and its own sources. A bad domain gets no answer, so the phishing page does not load and malware cannot reach its server. Machine learning on the name itself also catches algorithm-generated (DGA) domains never seen before.
One setting for the whole network
Switching over takes one change to your network's DNS setting. Nothing is installed, and every device that looks up a name is covered from then on, including printers, cameras and OT equipment that nobody is watching.
Daily reports per site
A report arrives by email every day and is also in the portal. It shows what was blocked, by client location and IP range, so every suspicious request can be traced back to its source. EXYS changes your allow and block lists on request.
BENEFITS
An extra layer of security
Because everyone makes mistakes sometimes
- Phishing protection
Phishing links evolve rapidly. Our Secure DNS keeps pace and blocks most phishing attempts.
- Malware blocking
Advanced DGA detection algorithms feed our Secure DNS resolvers, stopping an entire class of malware from working as intended.
- Traceability
Every blocked request is logged and detailed reports trace any suspicious activity originating from your network.
FEATURES
Simple yet effective
A simple way of adding an extra layer of security to your company

- Simple configuration.
- Configuring your entire network to use our Secure DNS is a simple process. You'll be protected in no time!
- High performance.
- Our DNS servers run on high-performance technology, so you stay secure without slowing down your internet connection.
- Advanced threat intelligence.
- Our malicious-domain feeds combine multiple sources with custom DGA-detection algorithms to protect you against a variety of threats.

Detailed reporting
Reports are generated daily and provide an overview of requests made to our Secure DNS servers, with the option to break reports down by location (headquarters, off-site production facilities, data centres and so on). Requests towards malicious domains are logged so that all suspicious activity can be traced to its origin.
STATISTICS
The value we provide
We are committed to providing our customers with the highest-quality service. Here are some numbers to prove it.
- DNS requests processed daily
- 200,000+
- Domains blocked per customer per day
- 60+
- DGA domains detected daily
- 25,000+
- New domains evaluated daily
- 250,000+
Frequently asked questions
What is a DNS filter (protective DNS)?
A DNS filter checks every domain name the devices on your network look up and gives no answer for malicious ones: phishing, scams, malware. Since every connection starts with a DNS lookup, the dangerous page does not load and malware cannot reach its server.
Does DNS filtering slow down the connection?
No. A DNS lookup takes a few milliseconds and our DNS servers are built on high-performance technology, so the protection goes unnoticed while browsing.
What is the difference between a DNS filter and a firewall?
A firewall controls traffic by address, port and rule; a DNS filter acts earlier, when a device looks up the name of a site. The two complement each other: the DNS filter blocks malicious domains for the whole network, even ones that appeared a few hours ago, with a single setting and without touching the firewall.
Where is the service hosted?
The core of the service is hosted in Switzerland and run by EXYS, which updates the database of bad domains every day.
Want to know more?
Contact us to book a demo or ask further questions. You can also find more information by downloading our free product flyer.