Quad9 the free secure DNS service is in trouble and need our help.

Quad9 - Wikipedia


If you dont know what Quad9 is, then here is a short explainer. Quad9 is a free DNS services much like Googles well known and, Quad9 ( and however add a very cool FREE security layer to the solution (a bit like Ciscos Umbrella, just not quite as customizable). If you use Quad9s DNS as your DNS service and you get infected by malware (eg. ransomware etc.) then chances are that the malware will try to “phone home” to its command and control server – Quad9 will blocks communication to known command and control DNS addresses thus disrupting many botnets or ransomware “providers”.

Anyhow, Sony has in Germany started a court case to force Quad9 to censor DNS resolution, Sony want Quad9 to block access to pages that Sony claim contain copyright protected content. In Denmark (where I live) we have a similar DNS blocking mandatory for national DNS services, it was originally introduced to block access to child phonography (something all of us could support) – but quickly the music industry and other rights owners/lobbyists saw this as a golden opportunity to block whatever they did not like and succeeded in convincing courts to add to the blocklist.

I support working against crime and child phonography however I do not think DNS blocking is the solution (perhaps against terrorism, pedophilia and violent crimes – but not for immaterial rights), experiences have shown, that what starts as a noble initiative quickly become a tool for lobbyists and huge enterprises to suppress whatever they dont like on the internet.

In general I think that more police, and more crossborder police collaboration is the way forth – not letting Sony and other dictate what is on the internet.

I supported the DNS blocking back in the days when the goal was to protect children against misuse, but now when it is a tool for mega companies and lobbyists my respect is gone.

Did you know:

Quad 9 offers free DNS services with malware filtering – to use just set your DNS (and or DNS servers) to query and, then block all other DNS traffic outbound and presto you added a free additional security layer to your setup (company or personal). It is important to add the blocking for other DNS queries in your firewall as malware otherwise could easily bypass your protection. Read more here:

Backblaze has something similar – here you use (blocks malware like Quad9) and (blocks both malware and pornography).
Read more here;

To whom it may concern:
We believe that the act of recursive DNS resolution is not within the justifiable legal boundaries of control by rightsholders during infringement litigation. In order for the DNS to remain a stable, secure, and trusted platform, we would urge policymakers and regulators to clarify and reiterate the long-standing understanding that recursive resolution is a neutral technical function that should not be subject to blocking demands imposed by private parties based on data that has not been ruled upon by a suitable and fair court process.

Further, we believe that systems that are designed for providing cybersecurity (be they DNS-based or otherwise) should not be made available to be repurposed for other goals against the interest and intent of the service operator or the end user. This type of corruption of core internet infrastructure risks eroding the trust in both the operators and a technology that is core to the continued well-being of the internet and that of the citizens who use it.

We support Quad9 in their objection to the ruling of the Hamburg Court of (Case 310 O 99/21), and hope that the court finds in favor of the defendant.