Tech Lead. Dad. I enjoy video games, software dev and reading.

Joined July 2019
25 Photos and videos
Julio Valls retweeted
NEW: malware developers added nuclear & biological weapons text to to their spyware. Goal? To trigger LLM safety refusals... so that their spyware wouldn't be analyzed by an AI security scanner. Cleanest practical example I can think of for why over-indexing on first order safety alignment is risky. When closed (and open) models ship with aggressive refusals, they will be sprinkled with second-order blindspots that attackers will discover...and exploit. We are only in the earliest days of attackers leveraging these features, and it wouldn't surprise me if users systems that need to handle complex cybersecurity issues demand that models be less safety-blunted. In the weeds: @SocketSecurity's post also shows why intention matters in how you design a malware analysis pipeline to avoid prompt manipulation. H/T to colleagues that shared this with me socket.dev/blog/mini-shai-hu…
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Julio Valls retweeted
If the vibe coders could read they’d be very upset
More AI-generated code doesn't make your team faster. It might actually slow you down.
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Julio Valls retweeted
Jun 6
Milton Friedman's greatest regret. The federal government discovered the perfect crime in 1943: make employers collect taxes before workers ever see their paychecks. You think you earn $60,000 per year, but you actually earn $75,000 and hand over $15,000 to politicians without ever touching it. The psychological difference is enormous. Before payroll withholding, Americans wrote quarterly checks directly to the Treasury. Picture yourself sitting at your kitchen table, writing a $3,750 check to the IRS every three months. The pain was immediate and visceral. Politicians faced constant pressure to justify every dollar because citizens felt the extraction in real time. Withholding transforms this concrete loss into an abstract accounting entry. Your employer becomes an unpaid tax collector, and you never experience the actual cost of government. Worse, most people celebrate their tax refunds as government generosity rather than recognizing them as interest-free loans they provided to politicians. The Treasury collects your money throughout the year, spends it immediately, then returns your own cash and receives gratitude. This system enables the explosion in government spending you witness today. Defense contractors billing $640 for toilet seats, agricultural subsidies for corn syrup, and congressional salaries for 535 people who rarely show up to work. When taxation feels painless, voters stop demanding accountability for how their money gets spent. Milton Friedman helped design withholding as a wartime emergency measure and later called it his greatest regret. Free market economists recognized that the psychological pain of direct taxation creates political pressure for fiscal restraint. The temporary always becomes permanent in government hands, and the emergency justification disappears while the extraction mechanism remains forever.
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My house rental contract is expiring in some months. And things are really grim in here. Renewing is going to put the price at nearly twice as much as I signed up 5 years ago. Even in small towns 50Kms away from Valencia the price is nearly as much 😱
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I'd go live in the mountains but I have a small kid too...
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Julio Valls retweeted
Codex just found a “workaround” of not having sudo on my pc…
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Julio Valls retweeted
Excited to release 🌟Polar🌟, our Agent RL rollout infra for real-world harnesses. Be it Codex, Claude Code, OpenClaw, Hermes, or your self-made ones 🔥 -- Polar takes your harnesses directly as training environments without code change. Find a problem, design the harness, and train your own agents! 🧵
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Julio Valls retweeted
Imagine if FBI agents entered Democratic Party headquarters while the President’s wife, brother, closest aides, mentor, party bosses and former top prosecutor were all under simultaneous investigation. That is Spain right now. Pedro Sánchez built his global brand as Europe’s “anti-Trump,” the progressive left’s moral alternative to populism, the darling of the New Yorker and the New York Times. Now his Socialist Party is under criminal investigation, police have entered party headquarters, and the scandal is reaching the Prime Minister’s own inner circle. abc.es/opinion/editorial-cor…
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Julio Valls retweeted
My current experience with coding models.
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Julio Valls retweeted
We are making our discount permanent! 🎉 Enjoy building with DeepSeek-V4-Pro and bring your innovative ideas to life! 🚀
The DeepSeek-V4-Pro discount has been extended until May 31, 2026, 15:59 UTC!
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Julio Valls retweeted
May 20
1/ We are sharing additional details regarding our investigation into unauthorized access to GitHub's internal repositories. Yesterday we detected and contained a compromise of an employee device involving a poisoned VS Code extension. We removed the malicious extension version, isolated the endpoint, and began incident response immediately.
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Julio Valls retweeted
Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.
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Julio Valls retweeted
A guy jokingly tweeted “olaf scholz you bastard what the hell is this” in frustration because Fortnite was stuck at 3% download. As a result, German authorities investigated him for committing a criminal offence (insulting a politician, §188 StGB) and forced him to delete it.
Happy anniversary zu der lustigsten sache die mir jemals passiert ist
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Julio Valls retweeted
Next.js just got its worst vulnerability ever, CVSS 8.6. → affects versions 13.4.13 , 14.x, 15.x, and 16.0.0–16.2.4 → attackers can access your internal services, cloud credentials, API keys, and admin panels → no authentication needed → one crafted request is all it takes → roughly 79,000 instances are exploitable right now → vercel-hosted apps are safe, self-hosted are not upgrade to 15.5.16 or 16.2.5 immediately.
Community note
The security fixes for these Next.js vulnerabilities were released in versions 15.5.18 and 16.2.6 on May 7, not the versions recommended here. x.com/nextjs/status/…
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Julio Valls retweeted
add this text into your Agent's system prompt trust me
Easiest way to protect yourself: 1. Use pnpm 2. Set a minimum-release-age
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Julio Valls retweeted
recommended reading. strongly recommended reading. i really like the pain avoidance angle. slots into my "paon/friction is when you learn" angle. when combined > cognitive debt. larsfaye.com/articles/agenti…
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Julio Valls retweeted
This is crazy. The hacker installed a dead-man's switch that will wipe your computer if you revoke the GitHub token they stole from you. Revoking the token is what triggers the wipe.
SECURITY ADVISORY — TanStack npm packages A supply-chain compromise affecting 42 @tanstack/* packages (84 versions total) was published to npm earlier today at approximately 19:20 and 19:26 UTC. Two malicious versions per package. Status: ACTIVE — packages are deprecated, npm security engaged, publish path being shut down. Severity: HIGH — payload exfiltrates AWS, GCP, Kubernetes, and Vault credentials, GitHub tokens, .npmrc contents, and SSH keys. If you installed any @tanstack/* package between 19:20 and 19:30 UTC today, treat the host as potentially compromised: • Rotate cloud, GitHub, and SSH credentials immediately • Audit cloud audit logs for the last several hours • Pin to a prior known-good version and reinstall from a clean lockfile Detection — the malicious manifest contains: "optionalDependencies": { "@tanstack/setup": "github:tanstack/router#79ac49ee..." } Any version with this entry is compromised. The payload is delivered via a git-resolved optionalDependency whose prepare script runs router_init.js (~2.3 MB, smuggled into each tarball at the package root). Unpublish is blocked by npm policy for most affected packages due to existing third-party dependents. All 84 versions are being deprecated with a SECURITY warning, and npm security has been engaged to pull tarballs at the registry level. Full technical breakdown, complete package and version list, and rolling status updates: github.com/TanStack/router/i… Credit to the security researcher for responsible disclosure.
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Julio Valls retweeted
Mucha gente no lo sabe, pero los europeos tenemos el derecho de desistimiento: Catorce días para cambiar de opinión y cancelar la compra o contratación de un bien o servicio. Sin dar explicaciones y sin penalización. Ejemplos: 1️⃣ Compras una app y luego después ves que no te gusta o no la usas. Puedes ejercer tu derecho de desistimiento ante Apple o Google y te devuelven el importe de la compra. 2️⃣ Contratas un producto bancario. En la ventanilla te extienden un contrato de ocho metros de papel en Arial 3. Firmas sin leer, pero al llegar al casa sacas el microscopio y compruebas que lo firmado no coincide con lo explicado verbalmente. Vuelves y cancelas el contrato ejerciendo tu derecho de desistimiento. Son dos casos que se me han dado a mí. Quizá otros no lo sepan y este pequeño tuit les sea útil, ¡ojalá! 😊
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Julio Valls retweeted
Management: how do we get people to use more tokens Thariq: hear me out
May 8
HTML is the new markdown. I've stopped writing markdown files for almost everything and switched to using Claude Code to generate HTML for me. This is why.
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