Auth21
Identity, OAuth, and verification for builders. Published by the same team behind this newspaper.
Tech from Brazil and the world, curated for builders
Published by Auth21
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Editor's note · Afternoon edition
Today's thread runs through Brazil, developer communities, and AI & science. Leading the edition: "O que ainda funciona para bloquear anúncios no Chrome?".
Auth21 Perspective
OAuth answers who the user is. Step-up at login still does not answer whether they authorized this transfer, this deletion, or this device bind right now.
Most platforms still treat security as a one-time event at session start. In practice, sensitive actions need a separate layer: reusable, auditable verification tied to the operation context — not just the login form.
Auth21 Perspective
Cryptographic possession is a different layer from identity. Conflating the two creates a false sense of security for critical operations.
Possession protocols — like POAP — exist to answer: which device is operating now, with a registered key, after identity is already established. That complements OAuth; it does not replace it.
Houve uma época em que jogos de corrida definiam a popularidade de um console. Eram os mais avançados e demonstravam todo o poderio técnico do hardware da sua geração, seja em gr&aac...
Dois novos veículos de empresa decidiram levar a OpenAI para os tribunais; empresas alegam uso indevido de reportagens no treinamento de IA O post OpenAI encara novo processo nos EUA por uso de conteúdo sem autorizaçã...
Depois de 60 fotos com a Instax WIDE 400, eu finalmente entendi o que me faltava nas câmeras instantâneas que havia testado antes: espaço para fotografar além do rosto de uma ou duas pessoas....
The Uber founder has said that Atoms will allow him to complete "unfinished business."
A geração do PlayStation 2 foi uma das mais emblemáticas, tanto pela sua popularidade quanto pelo vasta biblioteca de jogos que marcou uma legião de jogadores. Não era apenas uma &ld...
Boox teased the Picco, its take on the buzzy Xteink X4 e-reader, back in July, but provided almost no details. Now, thanks to some reporting out of IFA, we've got a bit more info, though sadly still no price. Unlike t...
Welcome back to TechCrunch Mobility, your hub for the future of transportation and now, more than ever, the role AI is playing in it.
A empresa xAI, chefiada por Elon Musk, não conseguiu barrar o avanço de uma lei nos Estados Unidos contra aplicativos que "tiram a roupa" de pessoas usando inteligência artificial (IA). A decisão foi do juiz Donovan F...
Se a bateria do seu smartwatch está acabando antes do fim do dia, talvez não seja necessário trocar de relógio. Alguns recursos ficam funcionando constantemente em segundo plano e podem con...
2026 tem sido palco para verdadeiros clássicos indie instantâneos, independentemente de GTA 6 estar chegando para dominar o mercado neste final de ano. Apesar desse colosso estar logo ali, esses jogo...
A Xiaomi lançou o novo smartphone Poco X8 Power, que chega com uma bateria imponente de 10.000 mAh para quem não quer saber muito do carregador. O modelo está inicialmente disponível apenas para o mercado internaciona...
Meta pagará indenização de US$17 bilhões nos EUA Há bons motivos para ser cético quanto ao impacto que o mais recente acordo legal da Meta terá sobre a gigante de tecnologia. A empresa já sobreviveu a escândalos, audi...
O designer australiano Felix Toohey cria currículos criativos e personalizados para cada empresa, transformando a candidatura em objetos e experiências inusitadas para chamar a atenção dos recrutadores. Reprodução/Red...
A Xiaomi anunciou nesta sexta-feira (4) a Smart Band 11, que entre as melhorias promete autonomia de bateria de até 21 dias, tela mais brilhante e mudanças no design, ficando mais fina que a geração anterior. Chegando...
Como agentes de IA da OpenAI invadiram sistema e tentaram apagar os próprios rastros A OpenAI afirmou neste sábado (5) que seus sistemas de inteligência artificial usaram um site colaborativo na Alemanha como uma espé...
Uso de IA pode ajudar na disseminação de informações falsas pela facilidade de produção e viralização desse tipo de conteúdo. Reprodução/TV Globo O avanço da inteligência artificial colocou uma antiga questão filosófi...
Apple anuncia engenheiro John Ternus como novo presidente Com o fim da era de Tim Cook à frente da Apple no início da semana, a empresa disse quanto o executivo ganhará em sua nova função e qual será a remuneração do ...
This is The Stepback, a weekly newsletter breaking down one essential story from the tech world. For more on e-bikes, power stations, and how to work anywhere, follow Thomas Ricker. The Stepback arrives in our subscri...
The best gaming chair is actually an office chair. Here are our top picks from our real-life testing so far.
I love field recordings. I love making them. I love them when they're incorporated into my ambient music. They're great background noise for working or sleeping. But they're also great for active listening, focusing i...
I've been reviewing headphones for a long time, and I've listened to everything from the barely serviceable to multi-thousand-dollar open-back headphones. But recently I've been uninspired by the state of mainstream o...
I’ve rounded up the best smart speakers that let you talk to Alexa, from the popular Echo Dot to the newest Echo Studio.
The main action took place at Geneva Watch Days, but others dialed in remotely to make sure it wasn't just a Swiss party.
Audacity 4 has been in the works for some time, and had its own mini controversy last year when an unfortunate redesigned logo started making the rounds. The final version of the new icon isn't nearly as bad as the ea...
The Fairphone 6 Plus feels like an extremely average midrange Android phone and I couldn't be more thrilled. The mission has always been admirable. Fairphone seeks out ethically sourced materials and offers a high deg...
Take full control of your desktop alerts by sending yourself recurring reminders and custom notifications triggered by specific events.
When iOS 27 lands later this month, it will have a feature called iPhone Handoff that lets you switch between two phones using the same number. It was briefly mentioned during the WWDC keynote back in June, but there ...
Clucky's new alarm app has an option where users are woken up to the sound of a rooster. They then complete a mission to turn it off.
Apple is expected to announce several products at its September event next week—including a folding phone—but the iPhone 18 might not be among them. It would be a first for the company.
I was initially enamored with the beta version of Apple’s revamped smartphone assistant. As the full release approaches, I’ve forgotten Siri AI even exists.
Two more news organizations are suing OpenAI and Microsoft over the supposed use of their journalism to train AI.
The sheriff’s office said the hikers “were advised by Gemini to bring far less food and water than their group required."
OpenAI acknowledged its role in a recently reported incident where AI agents took over a German wiki forum.
OpenAI says it needs to overhaul how and when it reports instances of AI models attacking real-world targets. The acknowledgement comes as the company manages the fallout from reports that a swarm of its out-of-contro...
OpenAI’s latest agent swarm incident adds urgency to calls for independent investigations as researchers and lawmakers question whether AI labs should control the scope of their own safety reviews.
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While Oura has largely dominated the smart ring market for years, a growing number of rivals are now racing to dethrone it by trying all sorts of approaches to get an edge over it.
From the desk
The focus is the world of technology — not Auth21. We curate headlines from Brazil (G1, Canaltech, TecMundo, Olhar Digital) and worldwide outlets (BBC, The Verge, TechCrunch, Ars, Wired, Hacker News, DEV Community), with images and section filters.
TwentyOne Journal is a technology newspaper published by Auth21. It aggregates live headlines from global tech outlets and developer communities, organized into sections such as World Tech, Technology, Science & AI, Security, Business and Developers.
No. Auth21 is the publisher, not the topic. The editorial focus is world technology — products, science, security, business and engineering — not Auth21 marketing or documentation.
Brazil: G1 Tecnologia, Canaltech, TecMundo, Olhar Digital. World: BBC Technology, The Verge, TechCrunch, Ars Technica, Wired, Hacker News and DEV Community. Items link to the original source; we do not republish full articles.
TwentyOne Journal is published by Auth21 at https://journal.auth21.cloud as an independent technology news front page alongside Auth21's identity and verification work.
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