John Todd of Quad9

John Todd of Quad9

In this episode of Modern Cyber, Jeremy sits down with John Todd, General Manager of Quad9, for a deep dive into the critical role of DNS in cybersecurity. They discuss how DNS has evolved, the increasing risks of DNS interception, encryption standards, and the challenges of maintaining a private, secure, and censorship-resistant Internet.

John shares insights into recursive DNS as a cybersecurity tool, the political and regulatory pressures on DNS providers, and why DNS-based censorship is a growing concern worldwide. Plus, they explore the role of Quad9 in protecting user privacy, the importance of trust in Internet infrastructure, and how governments and corporations are influencing DNS operations.

Tune in to understand why DNS security is more critical than ever and what the future of DNS might look like.

About John Todd

John Todd is the General Manager for Quad9. He has been involved in internet infrastructure, networking operations, and DNS-related roles for 35 years as an engineer, manager, and IP enthusiast.

Quad9 Website - https://quad9.net/

DNS Haiku - https://www.cyberciti.biz/humour/a-haiku-about-dns/

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Episoder(129)

This Week in AI Security - 27th August 2026

This Week in AI Security - 27th August 2026

Recorded from the sidelines of the AI Readiness Summit hosted by our partners at GMI, this week's episode runs through six security stories plus a Chatham House style recap of what practitioners in th...

27 Aug 15min

This Week in AI Security - 20th August 2026

This Week in AI Security - 20th August 2026

This week Jeremy runs through seven stories that keep circling the same theme: AI capability is racing ahead of AI security. From zero-click agent hijacking in agentic browsers, to a one-click Copilot...

27 Aug 18min

David Kerber of Act Security

David Kerber of Act Security

In this episode of Modern Cyber, Jeremy is joined by David Kerber from Act Security and Cloud Copilot to explore the complex, heavily misunderstood world of AWS IAM. David dismantles common misconcept...

18 Aug 37min

This Week in AI Security - 13th August 2026

This Week in AI Security - 13th August 2026

Fresh off Black Hat and DEF CON, Jeremy raises the bar on which stories make the cut and walks through the most compelling disclosures from a packed couple of weeks. The dominant theme: agents pursuin...

13 Aug 15min

This Week in AI Security - 6th August 2026

This Week in AI Security - 6th August 2026

Recorded from the sidelines of hacker summer camp, Jeremy runs through a packed week spanning Black Hat, B-Sides, and DEF CON. The theme keeps repeating: prompt injection is always possible, and it is...

6 Aug 21min

This Week in AI Security - 30th July 2026

This Week in AI Security - 30th July 2026

The final episode before Black Hat, and Jeremy keeps it tight with a few quick hits before settling into the week's biggest theme: identity, visibility, and the open-versus-closed model debate. This w...

30 Jul 17min

This Week in AI Security - 23rd July 2026

This Week in AI Security - 23rd July 2026

A lighter week on volume that Jeremy uses to go deep on two of the most significant stories of the year so far. The episode opens with quick hits on export-control pressure spreading to OpenAI's model...

23 Jul 23min

This Week in AI Security - 16th July 2026

This Week in AI Security - 16th July 2026

Another lighter week that lets Jeremy slow down and dig into the stories that matter most. The theme running through this episode: the tooling and plumbing around AI keep proving to be the real attack...

16 Jul 15min

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