Protect Your Network From Zero-Day Attacks

Safeguard against threats before a connection is made. Block malware, cryptojacking, and phishing domains across entire networks by deploying Control D on a router.
Block Malware & PhishingPrevent cyber threats from reaching your network.
Secure User DataProtect personal information from leaks & hackers.
Boost ProductivityControl access to distracting or harmful websites.
No Hardware RequiredCloud-based solution that deploys in minutes.

DNS Security Embedded In Your Router

Complex network structures make implementing a security solution that covers all entry points a challenge, especially for those without extensive IT resources. Control D fixes that. 
Bespoke domain and IP level blocklists
Create custom blocklists at the domain and IP level, to prevent access to known malicious or unwanted websites before a connection is established.
Machine learning based filtering
Control D’s filtering solutions utilize advanced machine learning algorithms to identify and block emerging threats in real-time, ensuring your network is secure even against zero-day vulnerabilities.
1-step setup on many routers
An uncomplicated one-step setup process for a variety of router models, making it accessible for businesses of all sizes without specialized IT teams.
Antivirus is not enough
Traditional antivirus software and firewalls aren't always enough, as they often act too late in the threat timeline. Control D helps block malware before it reaches your machine. 
Built by a world-class team of internet security pioneers
Control D is founded by the same folks who built Windscribe, a beloved global VPN brand catering to over 80 million users. We’ve been building internet privacy products since 2016, and we know what it takes to keep you safe from cyberthreats.

Trusted by experts
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"Awesome support. Awesome product""Best support you can find. These guys know their stuff — it’s easy to use, easy to manage, easy to deploy. These folks are genius."
Mike L
Chief Operating Officer,
Data Net Solutions Group
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"Great support and easy to setup on serverless environments""This is a great tool for serverless environments that need DNS filtering. The entire team that we have worked with is always very responsive and it's a pleasure getting to know their product better. Cost always comes into play but it is quite cheap per seat."
Thomas Farrell
Director of Operations,
Network Information Technologies, LLC
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"Excellent DNS service""One of the best designed interfaces my team has ever interacted with. Not only is the product light years ahead of the competition, they are a fantastic partner to work with on a regular basis."
Rael Solin
Enterprise Lead Sales,
Pinnacle ICT

Frequently asked questions

Control D operates at the DNS level, blocking threats like malware, phishing, and cryptojacking before a connection is made. When deployed on your router, it filters traffic across every connected device — no installs, updates, or manual scans required.

Control D blocks a wide range of threats, including malware, phishing domains, cryptojacking scripts, and access to unwanted or high-risk websites. With machine learning-powered filtering, it also defends against emerging and zero-day threats in real time.

Not at all. Control D supports one-step setup on many popular router models. You don’t need deep technical knowledge or dedicated IT staff — follow a simple guide, and your entire network is protected within minutes.

Yes. Control D gives you full control over what to block and what to allow. You can create domain-level and IP-based blocklists tailored to your business needs — whether it’s blocking known threats or preventing access to specific categories like gambling, adult content, or social media.

Unlike traditional antivirus or firewall tools that react after a threat enters your system,Control D acts before the connection is made. It filters traffic at the DNS level, covering all devices on your network without requiring installations or endpoint agents — perfect for modern, cloud-connected environments.

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