Stéphane Bortzmeyer

https://mastodon.gougere.fr/@bortzmeyer

Je parle surtout d'informatique / I talk mostly about computing.

Web site: https://www.bortzmeyer.org/
Livre: https://cyberstructure.fr/
Langue: fr
Language: en

Public Key

npub13gjk8epyecev6yz6d295sulct5pm3vwngq4ykqv76xzhk8hy4afskvfay0

NIP-05 Address

[email protected]

Profile Code

nprofile1qqsg5ftrusjvuvkdzpdx4z6gw0u96qack8f5q2jtqx0drptmrmj275cpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dslffx9f

Publishing to

relay.damus.io

nos.lol

Author Public Key

npub13gjk8epyecev6yz6d295sulct5pm3vwngq4ykqv76xzhk8hy4afskvfay0

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Last Notes

2026-08-23 19:14:28 UTC

Aaaaarrrrrghhhhh!
#nomDeDomaine #IDN #cybersécuritay
https://www.impots.gouv.fr/particulier/questions/comment-trouver-la-reponse-une-question-fiscale
https://www.impots.gouv.fr/particulier/delai-de-paiement
https://mastodon-assets.gougere.fr/media_attachments/files/117/146/411/475/236/552/original/6699663a3d0f264a.png

2026-08-23 16:32:28 UTC

Si vous ne connaissez pas les vidéos courtes « Écolo, mon cul ! », sur la difficulté des choix de consommation quand on veut limiter son empreinte environnementale, je vous les recommande. Par exemple, sur le choix entre un sac en papier et un sac en plastique pour faire les courses (la suite va vous étonner) : https://www.arte.tv/fr/videos/128051-001-A/ecolo-mon-cul/

2026-07-24 15:06:58 UTC

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Sinon, pour éviter d'aller chez Meta : https://www.info.gouv.fr/actualite/comment-gerer-l-eco-anxiete

2026-05-18 15:26:42 UTC

Le Musée National à Édimbourg a un Livingston Portmaster. C'est cet engin qui était le routeur pour l'accés Internet via RTC, modem et PPP (ou SLIP) au CNAM vers 1992/93. @npub1jfx…99uu avait été un des premiers utilisateurs.
https://mastodon-assets.gougere.fr/media_attachments/files/116/596/277/298/378/610/original/30f498ea44713015.jpg

2026-05-17 09:54:11 UTC

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Many requests coming from cars...
So, use ECC (error-correcting memory) and use a tin foil hat.
#OARC46

2026-05-17 09:45:15 UTC

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Many queries are received by the name servers of the 56 bitflipped variants of root-servers.net.
Many of them are ANY requests for large answers (attempts at amplification attacks?)
#OARC46

2026-05-17 09:26:59 UTC

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Another example was at nih.gov where name servers at the parent timed out for HTTPS (but not for A or AAAA). Child-centric resolvers still worked since child had extra (and correct) name servers).
#OARC46

2026-05-17 09:16:36 UTC

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The NS set and the associated glue MUST be consistent between parent and child domain. If they are not, the result will depend on wether the #DNS resolver is parent-centric or child-centric.
(talk by Petr Špaček)
At a time, it broke the .cd TLD.
#OARC46
https://mastodon-assets.gougere.fr/media_attachments/files/116/589/254/015/112/287/original/30abcbf7a086f307.jpg

2026-05-16 12:58:57 UTC

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J'espère que non, étant donné que jour férié = publication d'une faille Linux grave.

2026-05-13 13:04:04 UTC

Demain, commence un long week-end, avec pont. Logiquement, il devrait donc y avoir une annonce d'une grave faille de sécurité dans Linux au cours des prochaines heures.

2026-05-06 07:15:09 UTC

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Advice: use the permlink of a specific DNSviz test, otherwise, we see the *last* test.

2026-04-30 09:09:41 UTC

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Faux, c'était bien sur le compte officiel d'Octopuce.

2026-04-30 08:56:21 UTC

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Je confirme. Le pouète d'octopuce est gravement trompeur.

2026-04-30 08:52:26 UTC

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Faux (et je viens de tester sur une Debian 13). Le POC charge le module...

2026-04-28 15:24:13 UTC

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Par exemple, un hébergeur de courrier qui permet à ses clients de configurer sélecteur / nombre de bits via une interface Web avant de générer la clé…

2026-04-28 15:07:45 UTC

Dites, les experts en programmation Perl et en cybersécurité, le fait que, dans #OpenDKIM, le script opendkim-genkey lance une commande shell avec system() en passant des paramètres donnés au script et sans aucun contrôle, vous trouvez ça :

2026-04-09 16:34:12 UTC

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I wonder how long it takes to download ten petabytes...

2026-04-02 18:48:04 UTC

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évoque le défunt projet PIAF (Pour une Intelligence Artificielle Francophone, je ne connaissais pas) https://www.data.gouv.fr/datasets/piaf-le-dataset-francophone-de-questions-reponses
Avec participation citoyenne, et tout.
#teknimp

2026-04-02 18:22:42 UTC

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Ophélie Coelho rappelle l'importance de promouvoir les alternatives, par exemple en terme de systèmes d'exploitation (Ubuntu, /e/ et Murena sont cités).
#teknimp

2026-04-02 18:14:41 UTC

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Comme à beaucoup de tables rondes sur le numérique, on ne parle que des réseaux sociaux et de l'IA :-(
Les autres usages de l'Internet n'existent pas.
#teknimp

2026-04-02 18:07:50 UTC

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« Si on parlait de Mastodon au journal télévisé tous les soirs, il y aurait davantage d'utilisateurs. »
#teknimp

2026-04-02 17:45:23 UTC

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Maintenant, table ronde, @npub1u0t…efnr , @npub1a3r…vdcu et Anne Alombert.
Pour l'instant, c'est trop philosophique, avec l'erreur classique qui consiste à croire que les PDG de Big Tech prennent les décisions qu'ils prennent en raison d'une idéologie (transhumanisme, longtermisme, etc) et pas parce qu'ils sont simplement des capitalistes.
#teknimp

2026-04-02 17:10:30 UTC

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« On peut parler de colonialisme numérique pour l'Afrique. Pas pour l'Europe, qui aurait eu les moyens de faire autrement. »
#teknimp

2026-04-02 17:03:52 UTC

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Notion importante : « le passeur de technologies ». Ce sont les ambassadeurs qui promeuvent les solutions de BigTech. Cabinets de conseil, Simplon, État, DSI ignorants, etc.
#teknimp

2026-04-02 16:55:45 UTC

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La conférence parle de techno-impérialismes (au pluriel) car la Chine en fait aussi (même si le Parti-État ne laisse pas trop faire la concentration verticale).
#teknimp

2026-04-02 16:46:34 UTC

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Et @npub1u0t…efnr commence par l'impérialisme dans la littérature : 1984, Dune (avec des sociétés privées qui évoquent les « compagnies à charte » comme la Compagnie des Indes) et Snow crash.
Ces livres s'inspirent de la réalité : états et entreprises impérialistes et colonialistes.
#teknimp

2026-04-02 16:42:56 UTC

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Les Éditions de l'Atelier présentent les livres des intervenantes: https://editionsatelier.com/boutique/accueil/511-geopolitique-du-numerique--9782708295384.html https://editionslesperegrines.fr/products/lenvers-de-la-tech-ce-que-le-numerique-fait-au-monde
Éloge des éditeurs indépendants (bises à @npub1g48…xf33 )
#teknimp

2026-04-02 16:20:49 UTC

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@npub1a3r…vdcu
Salle des mariages :-)
#teknimp
https://mastodon-assets.gougere.fr/media_attachments/files/116/336/023/828/562/119/original/65a3c48267e627eb.jpg

2026-04-02 13:06:54 UTC

Mais quel mot-croisillon pour la soirée « Techno-impérialismes : le numérique comme outil de puissance ? » ? https://www.academieduclimat.paris/evenements/techno-imperialismes-le-numerique-comme-outil-de-puissance/
Avec @npub1u0t…efnr et @npub1a3r…vdcu (et une participante qui ne me semble pas être sur le fédivers).

2026-03-27 16:58:37 UTC

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All my code is at Framagit and by far rhe most common complain I hear from people who wanted to contribute (bug report, pull requests, etc) is "I don't want to create yet another account and to have to use yet another forge".
So, yes, federation is very important.

2026-03-27 16:50:22 UTC

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I read it as "move everything to Codeberg so we do the same error of centralizing everything, once more"

2026-03-25 15:29:12 UTC

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https://permacomputing.net/
#UndoneCS

2026-03-15 10:46:00 UTC

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curl downloads vs. the price of icecream in Florida.

2026-02-19 13:02:37 UTC

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And without even using Kubernetes or AWS!

2026-01-31 10:38:42 UTC

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Now, Benjamin Bellamy (not the artist, the other one), "Amplify Our Voices: Building Digital Sovereignty on the Fediverse"
#FOSDEM

2026-01-31 10:24:08 UTC

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Purely corporate speak from Mastodon official, boring and self-serving. (And insisting that new users should be directed to one specific instance, but no longer mastodon.social, but mandatory Mastodon and have to agree with the terms of use.)
#FOSDEM

2026-01-31 10:09:05 UTC

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Hey, but there are a lot of free seats in the Social Web devroom at #FOSDEM. Come and join us!
Starting "Tending the Herd: Community at Mastodon"

2026-01-31 09:39:15 UTC

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And with deliberate attacks (think supply-chain), free software is in the battleground.
And we are not ready for that.
#FOSDEM

2026-01-31 09:18:24 UTC

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Then, we moved to hyperscalers/ GAFAM
"Cloud first strategy" means you're proud of your incompetence.
#FOSDEM

2026-01-31 09:11:53 UTC

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The growth of the Internet and of free software was during a time of [relative] peace and hope, after the end of the cold war [in Europe]. It was ideal and we forgot about war, dictatorship and other nasty things.
#FOSDEM

2026-01-31 09:01:25 UTC

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"FOSS in times of war, scarcity and (adversarial) AI", talk by Michiel Leenaars "We need to talk about war"'
Because not everything at #FOSDEM can be fun.
[FOSS = Free / Open Source Software. AI = generating funny answers to stupid questions]

2026-01-31 08:45:58 UTC

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And if the room is full, or if you are remote: https://fosdem.org/schedule/streaming/
#FOSDEM

2026-01-31 08:43:54 UTC

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The numbers: 1014 events, 1186 speakers, 66 track/devrooms
"Don't skip the food queue but let staff and volunteers do it."
#FOSDEM

2026-01-31 08:36:13 UTC

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First slide with "sovereignty" on it. "If we lose democracy, open source will be irrelevant"
"Open source was always about politics"
#FOSDEM
@npub1u0t…efnr

2026-01-31 08:35:06 UTC

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Keynote starts: "FOSDEM is the center of open source" "The center of Belgium" "The center of the European Union" "The center of the free world"
#FOSDEM

2026-01-31 08:22:38 UTC

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And if you wake up early, you'll find seats!
#FOSDEM
https://mastodon-assets.gougere.fr/media_attachments/files/115/988/742/691/879/719/original/824a3ffc535b4123.jpg

2026-01-31 07:35:30 UTC

Good morning, Brussels! First day of #FOSDEM 2026. Lots of people and lots of talks.
https://fosdem.org/2026/

2025-12-30 09:06:14 UTC

Interesting article about the safe reimplementation of strcpy in curl. (Or "why programming in C is difficult".)
Note that one of the motivations was to avoid stupid "security reports" from automatic scans.
https://daniel.haxx.se/blog/2025/12/29/no-strcpy-either/

2025-12-29 09:01:47 UTC

Merci à @npub12k0…e2sz de contribuer activement à mon salaire ! « 171 noms de domaines » https://framablog.org/2025/12/23/framasoft-en-chiffres-edition-2025/

2025-12-09 10:42:12 UTC

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About "closed" social networks, when people prefer to stay in their small world, I heard at #SplinterCon the terms : "dark forest", "cozy Web" or "postviral era".

2025-12-09 09:59:17 UTC

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#Max, the very intrusive "super-app" of the russian governement, does not seem available in France. Google Play Store tells me "This app is not available for any of your devices"
https://play.google.com/store/apps/details?id=ru.oneme.app
https://max.ru/
#SplinterCon
@npub1uqe…za0f

2025-12-09 08:04:49 UTC

Good morning, Paris! Second day of #SplinterCon https://splintercon.net/

2025-12-01 14:48:44 UTC

@npub12k0…e2sz @npub179a…6mpj Ce séminaire du [@cis_cnrs](https://mamot.fr/@cis_cnrs ) peut vous intéresser : https://cis.cnrs.fr/sem-cis-aube-richebourg/

2025-11-02 16:11:17 UTC

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Writing a #DNS resolver, even a simple one, is hard. Ask @npub1hyj…avly :-)

2025-11-02 16:07:24 UTC

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When there is more than three levels of delegation (example : www.phy.cam.ac.uk), the text "Authoritative servers for www.phy.cam.ac.uk" is erroneous (the before-the-last step).

2025-11-02 16:04:29 UTC

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When the name is an alias (example: www.elysee.fr), the final answer is the CNAME (why not) but when you click on the CNAME, the next step fails because of the final dot ("Ask a random ROOT server about . TLD servers")

2025-11-02 16:02:01 UTC

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Cool, but why only IP.old?

2025-10-29 17:24:36 UTC

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Humans! "Starting at approximately 16:00 UTC, we began experiencing Azure Front Door (AFD) issues resulting in a loss of availability of some services. We suspect that an inadvertent configuration change as the trigger event for this issue. We are taking two concurrent actions where we are blocking all changes to the AFD services and at the same time rolling back to our last known good state. "

2025-10-13 08:42:43 UTC

Humour de geek (donc un peu privé) sur la Wake-on-LAN :
https://shop.mac84.net/en-eur/products/woke-on-lan-wol

2025-04-28 14:20:59 UTC

#security #injection
"The next rule we created was named “../”, and upon deleting that rule, the entire test SQL Server was also suddenly deleted, and we found ourselves in need of a new test server!" https://www.varonis.com/blog/malicious-firewall-rules-in-azure-sql

2025-04-24 07:42:56 UTC

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Indeed, most of these "security" products are crap. But it is not a problem, you don't buy them for security, you buy them to tick a box in the auditor spreadsheet.

2025-02-10 10:14:15 UTC

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Injection of dummy data during tests? Like when we test a network API.

2025-02-09 16:02:08 UTC

@npub1ggl…kevu @npub198r…2x7k I don't understand why we receive all these identical toots.

2025-02-02 14:44:04 UTC

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Discussion about ActivityPub. Is there even ONE forge software with proper ActivityPub support, allowing, for instance, to open an issue without creating an account (the number one problem reported by people about my projects hosted on a gitlab).
#FOSDEM

2025-02-02 14:22:51 UTC

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"Github is free. Free as in free cocaine."
#FOSDEM

2025-02-02 14:13:15 UTC

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Remembrance of the Sourceforge debacle.
#FOSDEM

2025-02-02 14:12:40 UTC

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"The Growing Body of Proprietary Infrastructure for FOSS Development: Repeating Bad History" Karen Sandler and Benver Gingerich (Bradley M. Kuhn is sick, which is trendy)
Survey of the room ("but we still love you if you rise your hand"): who uses Github? Teams? Slack? Confluence? Jira? All these proprietary tools are massively used to develop free software.
#FOSDEM

2025-02-02 13:02:47 UTC

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A lot of nice mouses pictures in this talk at #fosdem
https://mouses.info/
#mousesAreCuterThanCats

2025-02-02 12:50:40 UTC

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Now, a #UX talk about the history of hand controls for computers (trackballs, mice, etc) like the old "rollkugel" of 1966.
And how to plug them in modern computers.
#FOSDEM

2025-02-02 12:44:04 UTC

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Many thanks to @npub182h…tk2u
#FOSDEM

2025-02-02 12:42:37 UTC

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CommonLisp was used for the server part of the reconstruction.
https://btx.vaxbusters.org/
(home page of the CCC in 1987)
#FOSDEM
https://mastodon-assets.gougere.fr/media_attachments/files/113/934/345/951/494/710/original/ff904da07a1f7341.png

2025-02-02 12:37:23 UTC

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"I wanted to bring the official specification of Bildschirmtext to show you but I couldn't, it's too heavy."
#FOSDEM

2025-02-02 12:36:32 UTC

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SVG picture of the keyboard produced from the XML description through a XSLT program…
Font created by taking screenshots of the screen… (ChatGPT gave a good way to do that)
#FOSDEM

2025-02-02 12:32:36 UTC

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Bildschirmtext was invented the same year as the DNS :-)
It as not a complete terminal, it required a TV screen. Network capacity was asymmetrical (you were a consumer, not a producer)
Content creators needed to use a special keyboard.
Software was not free and seems lost.
The speaker started with a XML description of the keyboard.("If you don't know XML, it's a bit like JSON")
#FOSDEM

2025-02-02 12:28:39 UTC

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"Bildschirmtext - Reeenacting an ancient communication system using Javascript and Common Lisp" by Hans Hübner
(for the French people: Bildschirmtext ~= MInitel)
#FOSDEM

2025-02-02 12:25:37 UTC

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"This [decoding] program is very important if you want to play Dragon Quest in japanese."
#FOSDEM

2025-02-02 12:19:23 UTC

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In a very retrocomputing style, we start with a talk about breaking passwords typed in a japanese script in an old video game.
(With Rust)
#FOSDEM

2025-02-02 11:27:50 UTC

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Another interesting project: Genode. I was not even aware of it, despite its age. (The great thing about #FOSDEM is that you discover that you know nothing, #JohnSnow.)
Genode is a kernel written from scratch, which can run Linux drivers in headspace (to support a lot of hardware) and run unmodified applications with limited privileges (for instance a Firefox without write access to storage).

2025-02-02 11:23:35 UTC

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And we agreed to rant against NIS 2 and its bureaucratic approach to security.
#FOSDEM

2025-02-02 11:22:45 UTC

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Very interesting chat with the people of QubesOS. (I was not aware of what happened with this project after Joanna Rutkowska left).
I like the fact they emphasizes "reasonable security" ("perfect security is when the computer is turned off"), security which still allows people to do stuff with computers.
And they also pay a lot of attention to #UX (a security product without concern for UX won'be used).
#FOSDEM

2025-02-02 07:47:38 UTC

Good morning, Brussels! Second day of #FOSDEM https://fosdem.org/2025/
Today, retrocomputing for me.

2025-01-24 15:48:14 UTC

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Well, you talk, you send messages, you subscribe to accounts of people you find interesting, you reply to their messages, etc.
Tip of the day: visit the hashtag for one subject that is of interest to you, it is an efficient way to find content and people. For instance, if you're interested in gardening, go to #gardening.

2024-12-31 11:10:07 UTC

Le wokisme, ça va trop loin.
#Berlin
https://mastodon-assets.gougere.fr/media_attachments/files/113/747/122/765/791/946/original/4116017a2d449f73.jpg

2024-12-14 19:27:16 UTC

Alors, @npub1q4p…q6vs en a déjà parlé mais je plussoie : on a désormais une passerelle syndication → fédivers (j'ai bien dit syndication, pas juste RSS, contrairement à ce que le nom du service pourrait faire croire). Encore un outil pour publier soi-même sans passer par les géants du Web. Génial pour être prévenu des changements sur un site Web.
https://rss-parrot.net/
Un exemple de pouète qu'il envoie : https://rss-parrot.net/u/www.bortzmeyer.org/status/1734201475504065758 (alors que le site n'utilise pas RSS)
#syndication #Atom

2024-11-25 16:07:48 UTC

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For pictures!

2024-11-20 11:10:45 UTC

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Isn't it a bad advice? If you delete your account, a bad guy could register an account with the same identifier, and use (and waste) your reputation.

2024-11-18 15:38:45 UTC

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In Russia, going near a window kills.

2024-11-04 07:52:26 UTC

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The camel is overloaded more rapidly if there is no standard process (see the article).

2024-11-04 07:51:05 UTC

One good reason to have standards for programming languages: they stop innovation (and this is a good thing) https://pointersgonewild.com/2024/04/20/the-alternative-implementation-problem/

2024-10-18 09:53:16 UTC

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Le train, c'est binaire.
https://mastodon-assets.gougere.fr/media_attachments/files/113/327/813/043/298/822/original/592f84875192f790.jpg

2024-10-18 09:48:01 UTC

À la Cité du Train à Mulhouse, installations pour le Salon du Mariage (oui, oui).
https://mastodon-assets.gougere.fr/media_attachments/files/113/327/790/972/594/376/original/f6b1eb0d93734b2b.jpg

2024-10-01 08:21:08 UTC

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Plusieurs controverses (pas forcément justifiées) sur le corpus d'entrainement de StableDiffusion. Quelles images garder et quelles images filtrer ?
#CIS_CNRS

2024-10-01 08:17:08 UTC

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Valentin Goujon (Medialab SciencesPo) a étudié #StableDiffusion (un LLM de génération d'images « ouvert »).
https://huggingface.co/stabilityai
(J'apprends que James Cameron - oui, le cinéaste - est dans le CA de Stability.)
#CIS_CNRS

2024-10-01 08:01:21 UTC

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Les tribunaux en France n'utilisent pas l'IA mais les compagnies d'assurance, oui, pour essayer de prévoir l'issue des procès et/ou pour convaincre les clients (« regardez l'analyse de l'IA, si vous essayez cela, vous allez perdre »).
#CIS_CNRS

2024-10-01 07:56:37 UTC

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Un exemple de startup de la Legal Tech. « Des compétences à moitié en marketing, à moitié en informatique. Jamais en droit. »
https://predictice.com/
#CIS_CNRS

2024-10-01 07:50:40 UTC

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Hop, on commence avec la Legal Tech et l'algorithmisation de la justice. Maintenant que les quatre millions de décisions judiciaires par an en France sont en open data, peut-on entrainer une IA dessus ?
#CIS_CNRS

2024-10-01 07:48:19 UTC

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Je vais avoir du mal à vous mettre les titres des exposés et les noms des exposants car je ne peux pas copier/coller depuis le site Web, inaccessible.
#CIS_CNRS

2024-10-01 07:46:49 UTC

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« Si vous pouviez voir le site Web, vous pourriez voir que le cocktail a été repoussé à demain, en raison de la grève. »
#CIS_CNRS

2024-10-01 07:45:22 UTC

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Ça marche !
#CIS_CNRS

2024-10-01 07:40:46 UTC

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Combien faut-il de gens ayant deux ou trois doctorats pour brancher la machine et que tout le monde voit et entende ?
#distanciel #CIS_CNRS