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Mark Nottingham

@mnot.net

Co-chair IETF HTTP & AIPREF WGs, member Internet Architecture Board, standards lead at Cloudflare. Interested in the intersection of legal regulation and technical standards. My social media is mostly-write: if you want to be sure I see something, e-mail.

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26.05.2023
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Latest posts by Mark Nottingham @mnot.net

More belated introspection from the adtech industry. https://www.adexchanger.com/data-driven-thinking/the-privacy-zealots-were-right-ad-techs-infrastructure-was-always-a-risk/

09.03.2026 06:57 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Openness makes the Internet harder to govern โ€” but also makes it resilient, innovative, and difficult to capture. Let's look at how the openness of the Internet both defines it and ensures its success. https://www.mnot.net/blog/2026/02/20/open_systems

20.02.2026 02:46 ๐Ÿ‘ 7 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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The Power of 'No' in Internet Standards The voluntary nature of Internet standards means that the biggest power move may be to avoid playing the game. Let's take a look.

If you work on the web, you should read @mnot.net's latest:

mnot.net/blog/2026/02/13/โ€ฆ

It much more elegantly gets to the core of the pro/anti-progress asymmetry I tried to explore last year:

infrequently.org/2025/08/how-do-cโ€ฆ

13.02.2026 21:32 ๐Ÿ‘ 8 ๐Ÿ” 5 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

The voluntary nature of Internet standards means that the biggest power move may be to avoid playing the game. Let's take a look. https://www.mnot.net/blog/2026/02/13/no

13.02.2026 06:53 ๐Ÿ‘ 6 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Hmm, this one shows promise... https://consult.treasury.gov.au/c2026-739506

10.02.2026 05:27 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Right now, companies are hawking new AI features. They're not built for users -- they're built to satisfy management and investors.

I'll know they're serious when they start pushing new features that *happen* to use AI, but are designed to solve specific problems.

04.02.2026 22:46 ๐Ÿ‘ 5 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Social media companies baking fake notification indicators into their favicon is borderline abusive behaviour.

31.01.2026 22:04 ๐Ÿ‘ 6 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

The Open Web means several things to different people, depending on context, but recently discussions have focused on the Web's Openness in terms of access to information -- how easy it is to publish and obtain information without barriers there. https://www.mnot.net/blog/2026/01/20/open_web

20.01.2026 06:34 ๐Ÿ‘ 24 ๐Ÿ” 12 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

https://www.foreignaffairs.com/united-states/world-without-rules

13.01.2026 22:37 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I can see that you two share a certain style of communication... :)

01.01.2026 22:27 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

My great great great grandfather worked for them. Good gig, apparently.

www.marineband.marines.mil/About/Our-Hi...

23.12.2025 04:03 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

"UN sticks with not-multilateral internet governance model" (there I fixed it for you :)

19.12.2025 06:20 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Software update #2: I've made a small tweak to https://rfc.fyi/ to make it much more useful; when considering how many references an RFC has, it also counts those from the RFCs it obsoletes. That means that searching for a term like 'HTTP' or 'DNS' returns the most relevant RFCs first!

11.12.2025 09:37 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Software update #1: https://redbot.org/ has a range of new tests -- including updates to caching and support for Content Security Policy, Permissions Policy, and CORS -- and now is multilingual! Please take a look and give feedback.

11.12.2025 09:37 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

there, that should do it...

28.11.2025 12:39 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

hmm, ok. Sleep now, debug morning.

28.11.2025 12:19 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

OK try again when you get a chance.

28.11.2025 11:21 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

OK, I see a bug. Not sure why it's affecting you, but...

28.11.2025 10:52 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

yep, fr-FR

28.11.2025 10:43 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

ok sent a request and append &THIBAULT to the URL :)

28.11.2025 10:41 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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GitHub - mnot/redbot: REDbot is lint for HTTP resources. REDbot is lint for HTTP resources. Contribute to mnot/redbot development by creating an account on GitHub.

Very odd indeed. Code is github.com/mnot/redbot . Perhaps I'll start logging Accept-Language...

28.11.2025 10:37 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

how have you configured firefox? It has two separate language settings...

28.11.2025 10:31 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

OK try now

28.11.2025 10:18 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

ah yes I see the times not being translated -- something is not right, I'd fixed that...

28.11.2025 09:41 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

which site is that testing?

28.11.2025 09:41 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

weird weird weird. I've got it working in both Chrome and FF.

28.11.2025 09:40 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Note that the message on the front page isn't internationalised yet, but the rest is.

28.11.2025 09:38 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

In-ter-est-ing. On FF, that's including if you test a site?

28.11.2025 09:36 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Hmm, which browser? Works in Firefox.

28.11.2025 09:19 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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REDbot Lint for your HTTP resources

Go to redbot.org with a browser that's configured to prefer French...

28.11.2025 09:07 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0