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Reposted by Nick Sullivan

Center for Democracy & Technology @cdt.org · 2d

New guest post from CDT Visiting Fellow & IETF expert @nicksullivan.org: Encrypted Client Hello (ECH) closes the final major privacy gap in HTTPS by encrypting the Server Name Indication (SNI) — a milestone for online privacy. 🌐 Read more:

Encrypted Client Hello: Closing the SNI Metadata Gap

Referencesent-deployment-and-adoption" href="#current-deployment-and-adoption" class="toc-anchor">Current Deployment and Adoptionor">Trial by Firewall-security-systems" href="#adapting-network-security-systems" class="toc-anchor">Adapting Network Security Systemsy-sni-became-the-last-privacy-gap" class="toc-anchor">Why SNI Became the Last Privacy Gapre-metadata-leaks" class="toc-anchor">Background: Where Metadata Leakste, whether governments like it or not. Encrypted Client Hello (ECH) is nearing final IETF standardization [1]. It closes the last remaining metadata leak in HTTPS connections by encrypting the Server Name […]

cdt.org

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Nick Sullivan @nicksullivan.org · 3d

Today is Global Encryption Day hosted by Global Encryption Coalition.

Check it out here: www.globalencryption.org/2025/07/glob...

Global Encryption Day 2025 – Global Encryption Coalition

Join us on 21 October 2025 for the 5th-annual Global Encryption Day!

www.globalencryption.org

Nick Sullivan @nicksullivan.org · 3d

The SplinterCon conference about the splintering Internet is coming up in Paris early December and has opened its call for presentations. It’s a great venue for early ideas in security, networking, and cryptography. Deadline: Oct 31, 2025. Apply here: splintercon.net/paris-partic...

Paris - participate - SplinterCon

December 8-10, 2025 For guests Everyone interested in attending SplinterCon Paris as a guest should apply through the form below. Due to limited capacity and ambition to keep the meeting…

splintercon.net

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Nick Sullivan @nicksullivan.org · 3d

Honored to be nominated for the Internet Architecture Board (IAB) for 2026–27. The IAB sets the Internet’s long-term technical direction and oversees the RFC Series and the IETF/IRTF. Feedback to the nominating committee is welcome: datatracker.ietf.org/nomcom/2025/..., I'd appreciate it!

datatracker.ietf.org

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Nick Sullivan @nicksullivan.org · 3d

At IETF124, the CFRG (where I co-chair) is testing a new session format: the first slot for new work and informational presentations, the second for consensus and advancing drafts. MLS (secure messaging) is also finalizing its extensions framework.
Full Agenda: datatracker.ietf.org/meeting/124/...

IETF 124 Meeting Agenda

datatracker.ietf.org

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Nick Sullivan @nicksullivan.org · 3d

My new explainer with @cdt.org covers how ECH closes one of the last major metadata gaps in HTTPS by making hostnames private. It’s been approved as an Internet Standard and is close to getting an RFC number: cdt.org/insights/enc...

Encrypted Client Hello: Closing the SNI Metadata Gap

Referencesent-deployment-and-adoption" href="#current-deployment-and-adoption" class="toc-anchor">Current Deployment and Adoptionor">Trial by Firewall-security-systems" href="#adapting-network-securit...

cdt.org

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Nick Sullivan @nicksullivan.org · 3d

We are hosting a side meeting for the ARMOR mailing list on Nov 3 at 19:00 EST (Duluth Room). We’ll be discussing how to make network protocols resilient in adversarial environments. Remote attendance welcome via WebEx: trello.com/c/8hhaa23A

Trello

Organize anything, together. Trello is a collaboration tool that organizes your projects into boards. In one glance, know what's being worked on, who's working on what, and where something is in a pro...

trello.com

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Nick Sullivan @nicksullivan.org · 3d

Here are seven things I’m looking forward to in the next month.

Tomorrow, I’ll be guest lecturing with Kyle Hogan at NYU for Sunoo Park’s class on public interest tech. The theme: bikeshedding and how to get things done in internet standards.

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Nick Sullivan @nicksullivan.org · 13d

Unsustainable tactic.

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Nick Sullivan @nicksullivan.org · 25d

Suit up with ARMOR and help protect the Internet’s founding promise.

Join ARMOR: mailman3.irtf.org/mailman3/lis...

Public Archive: mailarchive.ietf.org/arch/browse/...

mailman3.irtf.org

Nick Sullivan @nicksullivan.org · 25d

The Internet was built to be open and neutral. ARMOR is about protecting that founding promise by strengthening secure, end-to-end connectivity against today’s adversarial network environment.

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Nick Sullivan @nicksullivan.org · 25d

For years, the protocols that connect us online have inadvertently exposed user metadata. Network intermediaries exploit this to throttle, block, manipulate, and disrupt end-to-end communication.

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Nick Sullivan @nicksullivan.org · 25d

That is why I helped launch ARMOR (Adaptive Resilience & Measurement for Operational Robustness), an open IRTF mailing list for academics, engineers, and rights advocates to collaborate on keeping end-to-end connectivity resilient.

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Nick Sullivan @nicksullivan.org · 25d

Global network interference and traffic disruption are on the rise. In 2024, governments in 41 countries blocked websites and in 25 countries entire social platforms were restricted (freedomhouse.org/report/freed...).

The Struggle for Trust Online

Around the world, voters have been forced to make major decisions about their future while navigating a censored, distorted, and unreliable information space.

freedomhouse.org

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Nick Sullivan @nicksullivan.org · Sep 19

What sort of organization? 501c3?

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Nick Sullivan @nicksullivan.org · Aug 15

Coming soon!

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Reposted by Nick Sullivan

Joseph Lorenzo Hall, PhD @josephhall.org · Aug 10

Continuing our look at the Enigma track talks is "Fighting Fire with Venom: Adversarial Defense Against Unauthorized Web Crawling," presented by independent technologist Nick Sullivan. 1/3

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Nick Sullivan @nicksullivan.org · Aug 13

Tomorrow on USENIX Security’s Enigma track, I’ll unveil Venom, a new framework to sting back at rogue AI web crawlers with some adversarial mischief. If you’re around Seattle, come say hi or ping me!

www.usenix.org/conference/u...

Fighting Fire with Venom: Adversarial Defense Against Unauthorized Web Crawling | USENIX

www.usenix.org

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Nick Sullivan @nicksullivan.org · Jul 21

The digital identity space is approaching a dangerous precipice.

newdesigncongress.org/en/note/2025...

The Mask-Off Moment for Digital Identity

Our 18-month investigation reveals how digital identity systems create brittle societies. This foreword traces eight case studies that demonstrate the catastrophic failures of digital identity across ...

newdesigncongress.org

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Reposted by Nick Sullivan

Real World Crypto Symposium @rwc.iacr.org · Jul 13

The Call for Contributed Talks is now open for RWC 2026! And the deadline for submissions is now Oct. 10, 2025.
rwc.iacr.org/2026/contrib...

RWC 2026 call for papers

Real World Crypto Symposium

rwc.iacr.org

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Nick Sullivan @nicksullivan.org · Jul 7

Here are the slides from my recent keynote on post-quantum cryptography and Q-Day.

www.linkedin.com/posts/ntsull...

🏗️ A TALE OF THREE BRIDGES AND THE COMING QUANTUM RECKONING | Nick Sullivan

🏗️ A TALE OF THREE BRIDGES AND THE COMING QUANTUM RECKONING Two months ago in Berlin I delivered a keynote on post‑quantum cryptography at Visa Risk Reset, an invitation‑only summit for CROs, CISOs, r...

www.linkedin.com

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Nick Sullivan @nicksullivan.org · Jul 7

Good read: a detailed and accessible report published on @chinafile by Jessica Batke and Laura Edelson on China's internet censorship system, known as the "Locknet"

locknet.chinafile.com/the-locknet/...

The Locknet: How China Controls Its Internet and Why It Matters

June 30, 2025 The man gazes earnestly into the camera, the glow from his computer monitor reflecting off his black-rimmed glasses. “This is more than just a cultural moment,” he says with a smile. “It...

locknet.chinafile.com

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Nick Sullivan @nicksullivan.org · Jun 5

Fascinating House Judiciary hearing going on live right now: Influence on Americans' Data Through the CLOUD Act. Big focus on the UK and Apple's E2E backup system. www.youtube.com/watch?v=QJgw...

www.youtube.com

Nick Sullivan @nicksullivan.org · May 30

I’m going to hold off on using the term artificial intelligence to describe this current generation of products and just call them what they are: language models. Until they gain mathematical and symbolic reasoning skills, the term “intelligence” is a stretch.

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Nick Sullivan @nicksullivan.org · May 23

Germ is launching support for open-source AT Protocol and the Bluesky platform in their Germ messenger. Everything I want in a messaging app: strong encryption, clean UX, and trust & safety tied to social identity. A big move for private messaging and I can't be prouder to be an advisor.

Germ Network @germnetwork.com · May 20

Yes, you read that right. Germ DM is integrating with #ATProto, bringing you best-in-class E2EE DMs with your Bluesky handle.

Be first to try it in beta, coming sooner than you think.

germnetwork.com/beta-waitlist

Germ-ATProto Beta Waitlist — Germ Network

germnetwork.com

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