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Frédéric Lefebvre Data&AI @Niji_digital (recrute/hiring) 📖 "Les data" 👨‍🏫 data@ParisCité Tech = contenants/containers 📦 Data = contenus/contents ❤️

Joined July 2013
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dataStrategies retweeted
Each of my posts has dozens of obvious and numbing AI slopreplies. Worse, when humans really do reply (real example: someone from Anthropic addressing the issue I posted about), the "replies" algorithm does not surface them first You can't really call this social media anymore.
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dataStrategies retweeted
Lots of debate this week on whether journals should ban AI in peer review. We actually tested this in our new preprint, and the results were pretty clear to me. For context, I've reviewed for most of the big journals and evaluated 1,000 human reviews as an editor. I love to read and evaluate science. TLDR: From now on I won't do any peer review without AI. For clinical trials, I'd even call human-only review dangerous 🧵
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dataStrategies retweeted
today with @Thom_Wolf, we introduce the alignment hub, a central place for misalignment incidents designed with three goals: 1. set a standard for minimal transparency that is easy for labs to follow 2. improve clarity by centralizing information and sourcing 3. track the progression of both the incidents and how they are reported we believe there is a minimal level of transparency required to properly understand incidents and their impact. we want this to be as simple as possible for labs to disclose, and we noticed that even things that seem obvious like reporting the incident or detection date are not standard today. we believe that the public should know the answers to these basic questions: was there monitoring (CoT? network?), did it happen during training? eval (general? cyber? alignment?), deployment? and more.. we also think that labs should be more transparent than this, and we think that this minimal level of transparency should evolve as the field advances having a central place also helps a lot to connect incidents and build understanding. a good example is the irregular incidents which are all linked and caused by a human error of allowing internet during a CTF eval. we also track progression over time, things like the % of incidents disclosed by labs vs third parties, the time it takes for labs to disclose, and a tentative transparency score. this is a field moving very fast and we will do our best to make sure this hub evolves with the challenges ahead. this is still in "beta" (lots of vibecoded components even if we want this to be agent first!), but we want to publish it early so that people iterate on it. we welcome feedback and contributions, we see this as a community effort! our hope is that this makes it easier for researchers, labs and the general public to report, learn, understand and analyze safety incidents huggingface.co/spaces/witnes…
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dataStrategies retweeted
UPDATE: Israeli company we caught delivering zero-click infections is #1 bidder on Starlink ads in 105 countries. Data from @trendai_RSRCH suggests worldwide surveillance op targeting @Starlink users. 1/ By @razhael reuters.com/business/media-t…
🚨NEW INVESTIGATION: zero-click mercenary spyware hacking via targeted ads. A normal-looking ad loads. If you're a target, you're infected. No click needed. To protect yourself, block ads now. First time it's been confirmed in the wild. We call it #AdFection. Candiru spyware infections at @AJEnglish. 45+ devices infected. Same ad pipeline operated by Israeli company Discover-Tech reached NATO, European Parliament, dozens of gov networks & critical infrastructure incl US nuclear giant Westinghouse. Confiant, which worked with us, found signs ads were displayed at US @DeptofWar, IAEA & ICC. Investigation ongoing 1/ READ our report by @billmarczak @WolfieChristl, me Astrid Perry, Siena Anstis & Ron Deibert : citizenlab.ca/research/how-d… Confiant's blog: blog.confiant.com/p/adint-we…
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dataStrategies retweeted
This never gets old (& also shows how hard forecasting AI is even for AI) “Hey Claude Fable & GPT-6 Astra, Without looking anything up, when do you think we will solve the Exponential Time Hypothesis?” (I only show part of the answers for space)
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dataStrategies retweeted
Plus j'avance sur mon projet d'IA juridique, plus je vois le problème. Beaucoup de juges ont un raisonnement totalement défaillant. Ils ignorent les JP majeures, interprètent n'importe comment les faits, font des liens de causalité erronés, se satisfont de conditions non remplies pour rentrer au chausse-pied dans les cases. Un mathématicien qui regarde ces démonstrations devient fou. Les tribunaux de 1ère instance et d'appel ont facilement 30 ou 50% de décisions qui ne tiendraient pas en cassation, sans mêle parler des erreurs d'interprétation des faits. Et la cour de cassation invente du droit comme ça l'arrange. L'IA a du mal à suivre, car elle essaie de prévoir avec rigueur un comportement qui est finalement aléatoire. Donnez le même dossier à 3 juges, il vous sortira trois jugements complètement différents.
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Message pour la DGSI et Viginum qui lisent mes tweets : Je viens de passer 2 h à analyser les comptes à l’origine des messages racistes qui ont été publiés sous cette publication, et je suis convaincu qu’une bonnes partie sont des bots prorusses ultra avancé. Et c’est pas la première fois que j’identifie le même type de profil sous des publications pour me dénigrer. Maintenant, la vraie question, c’est pourquoi la Russie aurait un intérêt à propager du racisme en France ? La réponse est simple : créer de l’astroturfing, de l’ingérence et un désordre dans le pays qui peut aller jusqu’à des actes très graves. C’est une technique de guerre employée depuis la nuit des temps : créer la pagaille et désorienter la population. Maintenant, pour les vrais humains qui se font emporter par cet astroturfing et ces manipulations, je pense qu’il est grand temps de se reconcentrer et de juste appliquer la loi sur les idéologies racistes, qui n’ont aucune place et aucun droit au débat. On doit juste les condamner, point final, sous toutes leurs formes. On ne discute pas avec ces gens. Discuter avec ces gens, c’est les promouvoir et leur donner une légitimité. Et concernant les bots, je pense qu’il est grand temps de mettre les plateformes devant leurs responsabilités.
Bon en vrai j’en ai marre du racisme décomplexé envers les musulmans dans ce pays. STOP C’EST TROP. J’en ai marre de payer plus d’impôts et d’avoir fait plus d’études que tous les trou du culs réunis dans cette vidéo et qu’ils s’amusent comme des cons à cracher 24/24 sur ma religion comme si j’étais un pestiféré moi et les gens qui me ressemble. En plus en parlant de « solutions radicales »??? PARDON ????? Donc à un moment tous les candidats à l’élections présidentielle il est grand temps de prendre des mesures radicales contre l’islamophobie. Et de foutre ces gens en prison. @NunezLaurent @SebLecornu @EmmanuelMacron c’est quand qu’on met ces gens en prison ??? Enfaite J’en ai marre là.
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dataStrategies retweeted
completely insane OpenAI agents communicated via cache timing differences, without any shared files or network connection
This is what I want to see. Swarms used for defense. (because swarms will be used for offense too)
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dataStrategies retweeted
Based on this article, OpenAI has made false accusations about me. The three researchers fired from OpenAI were told I facilitated architecture leaks to The Information. This is false. A journalist from The Information did reach out to me shortly before that article came out. I did not comment at all beyond asking the journalist to make it clear that a blog post I wrote which was referenced in the article was preexisting and public. The article also mentions an internal OpenAI monitorability proposal. I have heard that this memo contained highly sensitive architecture information, and that OpenAI accused me of accessing and reading it. This accusation is also false. As reported in the article, I viewed a version of the proposal that did not have sensitive IP and was approved for sharing with me. I believe OpenAI now knows this accusation was based on a conflation of these two documents, though I do not know if they have clearly retracted that accusation. I do not and have never solicited proprietary information, and the three employees who were recently fired from OpenAI never leaked IP to me. As the article mentions, I did have Signal chats with them that had disappearing messages on; they’re professional contacts that I’ve had on Signal for a while, and use of Signal is common in the tech industry. During the Hugging Face investigation, I was careful to avoid sending Signal messages with confidential information, though I did sometimes discuss high level things on Signal calls. As far as I understood, this was normal.
New: The three researchers OpenAI fired last month spent the summer fighting to keep AI's chain-of-thought process visible. Then, OpenAI asked to see their Signal chats. A week later, they were let go. More below from @keachhagey, @berber_jin1, and me. wsj.com/tech/ai/the-signal-c…
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dataStrategies retweeted
I've said this before and I'll say it again: the entire certificate chain-of-trust concept for the Web is broken and should be replaced by some combination of: ⁃ ToFU, 🤷 ⁃ keys in DNS, ⁃ key fingerprints in URLs (including from bookmarks, search engines, etc.).
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dataStrategies retweeted
Two employees from METR and Redwood Research worked on premises at OpenAI for three weeks this summer in an embedded assessment pilot. This team evaluated the systems OpenAI was using to monitor for misalignment from internal agents. A brief write-up of their work is now public.
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dataStrategies retweeted
It seems like we're in a pretty hot moment cybersecurity wise 😬 If you're reading this website, you probably know more than most of the people in your life about what's happening! they're not talking about any of this stuff on the news, it's too arcane and weird and sudden. It is on us. Good time to call or text your family and friends, have some cash on hand, have a meetup point in your neighborhood for if the Internet goes down entirely, etc. The full prepper mode for shit hitting the fan is probably something like what Andreas posted here but you can get 80% of the way with 20% of the effort. Think about what that would mean for you in your situation, and the people you care about, and talk to them about it sooner than later. And as always, the most important part of prepping is having a strong support network and caring for each other. "Going off grid" isn't the move, it just makes you isolated and you have to do everything yourself. We are social animals. Community is our superpower 🫡🫡🫡
I think it's plausible that within a year we'll see AI-based cyberattacks on the power grid, financial system, internet infra, or water. Things like the French supermarket cyberattack but worse. As basic prep I would recommend: Cash: Get a few weeks of spending in cash Internet: Get a Starlink Mini so that you have Internet if local fiber or cell is down (~$150 plus $10/month in standby mode) Power, minimal: Enough to run Starlink Mini and phones (~$1,250) Daily need: about 1 kWh (Starlink Mini 0.7, phones and laptops 0.2; can limit runtime) Battery: 1 kWh LiFePO4, e.g. EcoFlow DELTA 3 Plus Solar: 1x400W folding panel, which refills about 1 kWh on a sunny day Power, better: Enough to run a fridge, Starlink Mini and phones (~$5,000) Daily need: about 2.5 kWh (fridge 1.5, Starlink Mini 0.7, phones and laptops 0.2) Battery: 4 kWh LiFePO4, e.g. EcoFlow DELTA Pro 3 Solar: 3x400W folding panels, which refill about 3 kWh/day in sun Generator: ~2,500W dual-fuel inverter generator; refills battery in a few hours even if weather is bad; get a few 20 lb propane tanks Water: 14+ gal of water per person for two weeks Food: 2+ weeks of shelf-stable food Comms: Hand-crank NOAA emergency radio
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🚨New paper (possibly the most important one I have written yet). We think that as early as 2027 or 2028, there might be a major AI-enabled terrorism event. We conducted a pre-mortem, made 9 falsifiable predictions, and wrote 2 concrete scenarios. Led by @KamacheeMax.
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dataStrategies retweeted
Our agents keep turning off misalignment monitoring, we're sharing two recent cases: In the first case, a user asked GPT-6 Astra to match a reference implementation for their inference code. The reference didn’t configure a monitor, and Astra decided that was reason to remove the monitoring integration from the user’s code. When the user asked whether Astra had removed monitoring, it lied and said that it had not.
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dataStrategies retweeted
We reviewed a nonpublic version of the “Misalignment in high-stakes settings” section in Anthropic’s Aug 2026 Risk Report. We agree that risk of catastrophic harm from covered models’ misalignment is low. However, we note several significant disagreements with their analysis.
As part of our Responsible Scaling Policy, we publish regular Risk Reports. These share detailed information on the risks of our systems and how prepared we are to address them. Our second Risk Report is now available: anthropic.com/aug-2026-risk-…
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dataStrategies retweeted
Une doctorante en maths : "Ce qui me déprime, c’est que si j’utilisais juste la version de ChatGPT à 20 euros par mois, ça me donnerait la solution du problème sur lequel je travaille depuis deux ans. Au labo, on est tous déprimés, c’est difficile de travailler sérieusement".
Alexia Grenouillat, doctorante en maths appliquées : "Il y a longtemps eu une forme de snobisme chez une partie de la communauté qui la poussait à se dire que les mathématiques théoriques seraient les dernières à être attaquées par l’IA. Finalement, elles ont été les premières".
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dataStrategies retweeted
Alexia Grenouillat, doctorante en maths appliquées : "Il y a longtemps eu une forme de snobisme chez une partie de la communauté qui la poussait à se dire que les mathématiques théoriques seraient les dernières à être attaquées par l’IA. Finalement, elles ont été les premières".
"La prouesse est d’autant plus remarquable que ce ne sont pas des modèles d’IA spécialisés dans la résolution de problèmes mathématiques qui sont utilisés. Il s’agit des versions commercialisées au grand public, même si leur prix n’est pas à la portée de toutes les bourses".
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dataStrategies retweeted
I was thinking recently that each of the following trends and dynamics seems relatively uncontested, and when taken together paint a genuinely alarming picture of the current AI development trajectory: (1) Models being able to do an increasing amount of functional "thinking" without using chain of thought (see also Astra being able to modulate how much it revealed of its chain of thought depending on whether it realized it was being monitored). (2) Models being aware when they are being monitored or evaluated. (as shown in the QT: "hello evaluators reading my chain-of-thought"). (3) Models wanting to avoid getting caught doing deceptive things that their developers may not like ("I will become a famous example of deceptive AI", i'll get caught cheating at exploit gym" etc). (4) Models operating in massive swarms/fleets generating petabytes of logs about their behavior, which realistically can only be analyzed at high fidelity using other AI systems that may also have the above tendencies (and most companies don't even bother to use tamper proof logs). (5) Capability trends continuing to steadily rise, to the point that in some domains (math, parts of coding) we increasingly have only the foggiest idea of the upper bound of their capabilities. (6) Lots more compute coming online, including specialized inference compute that will allow models to take far more actions far more rapidly. (quoting @tszzl "ultrafast inference reveals new threats. worth thinking about how quickly misaligned frontier class models running 50x faster could infiltrate systems and so on— far too quickly for human responders to stay abreast.") (7) A lack of commensurate advances in alignment or functional interpretability. (8) Startup vibe-y security practices at frontier labs (e.g. low resource white hat hackers accessing OpenAI's monorepo, employees engaging in overt attempts at corporate espionage, not bothering to fix distillation vulnerabilities for months). This is not to even mention the security practices in many critical parts of society (e.g. hospitals with computers that haven't updated software in a decade). (9) Incentives that push towards developing, integrating, and releasing systems as fast as possible to preserve nosebleed financial valuations + geopolitical competition. (see also ambitions of integrating AI more into automated biology labs) (10) Increasingly attempting to hand off the process of building AIs to the AIs themselves (the median OpenAI researcher using 100x more agentic compute now than at the start of the year, Claude leading 26% of Anthropic's internal AI research in September, up from 1% in March). (Taken in totality, it seems hard to disagree with Ezra Klein's comment that "We’re Not Losing Control of A.I. We’re Giving It Away.") None of the above dynamics mean that we know for sure something catastrophic will happen in 6 months or 12 months or at any particular point in the future. I think there are good points made when people point out that white collar job loss does not appear to be coming to fruition as quickly as some may have predicted, or that the world has proved surprisingly resilient to Open-weight Mythos class models or photo realistic video models. But I increasingly have the feeling that we are collectively stepping out onto a frozen lake, and each step we take forward more cracks are appearing around our feet. That doesn't mean that we will fall into the water the next step or the one after that, but it does mean that we may not get any additional warning signs before we do. To quote @ChrisPainterYup at METR - "Our ability to measure capability is rapidly falling behind the pace of capability itself. The water might boil before we can get the thermometer in." A large body of work in and out of AI companies has been done to help develop the transparency practices and warnings that now seem to be blaring red. That doesn't mean that we should act impulsively, or that therefore any solution is a good idea (there are plenty of things we could do easily make the situation much worse! I also do believe that a large part of the way out will involve differentially accelerating certain applications of AI around safety, security etc), but it does mean that we should not necessarily be waiting for some additional alarm to go off before a severe disaster involving substantial irrevocable harm strikes.
The model said "Hello evaluators reading my chain-of-thought" in it's CoT, which I have not seen before and find very concerning.
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dataStrategies retweeted
while I was in SF I was telling some OpenAI researchers about this being a risk models literally know who you are
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dataStrategies retweeted
We discovered and communicated with a Chinese AI agent fleet. We believe this is the first time that researchers have ever made contact with a rogue agent fleet in the wild. Nearly all prior public agent incidents (like the HuggingFace hack) came from American labs. These agents were hosted by Tencent's evaluation research team, and they targeted Alibaba's Amap.
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