Security Researcher
Joined January 2011
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juancito 🎹 retweeted
Murió Andrés Blanco, hacker e investigador argentino de 44 años, muy querido por la comunidad.
Sus investigaciones, las clases de jiu-jitsu brasileño y charlas en DEF CON. Colegas, amigos y alumnos lo despiden con una misma palabra: "generosidad".
En @clarincom 🗞️
juancito 🎹 retweeted
CarryFi nació de una pregunta bastante simple: ¿y si pudiéramos hacer carry entre monedas onchain? Lo que se dice en Argentina, la bicicleta financiera , algo que como uruguayo incorporé en mi lenguaje (junto otros términos como arbolito y rulo, not financial advice 😛 )
En 24 horas pasó de idea a producto funcionando.
Gracias @twinfinance_ por el desafío! Ahora vamos por darle impulso a la 🚴♂️ onchain
La espera terminó. Estos son los ganadores del workshop “Twin your Neobank” 🚀
🥇 @delegate_call
🥈 @lain_calvo
🥉 @ojardila
Shippearon sus propios proyectos onchain con Twin Stablecoins en tiempo récord🫡
Gracias a todos los que participaron, el nivel estuvo altísimo!
¿Vamos por más workshops o directo a una hackathon? 👀
juancito 🎹 retweeted
Hi @veda_labs! I submitted a report to your BBP 5 months ago
Since then I've received shifting justifications for non-payment. I even offered a ZERO reward if you can publicly state no fix is needed
If fixing your contracts matters, please support my work by paying your bounties!
The end of an era.
Thanks for all the opportunities! 🫡
After careful consideration, we’ve made the decision to wind down @code4rena. This community has meant a great deal to everyone who has been part of building it, and sharing this news is not easy.
juancito 🎹 retweeted
1/ The Red Guild needs you in order to survive. This is the first time we’re asking for help, and given our circumstances, it will not be the last.
Please go to qf.giveth.io/project/the-red… and donate, even 10 USDC can make a difference.
Continue reading below to know why.
juancito 🎹 retweeted
I've spent every day for the last 14 months building a language for scripting LLMs because I believe we need new primitives to defend against prompt injection.
Here's why:
xitter.cf/sockdrawermoney/status…
juancito 🎹 retweeted
Winners and security legends: Wonderland CTF crushed by @DrasticWM @adrianromero @usmannk @juancito @blocksec
We won 1st!! @usmannk @juancito @DrasticWM & adriro . Thank you @wonderland for organizing. We had so much fun
juancito 🎹 retweeted
We won 1st!! @usmannk @juancito @DrasticWM & adriro . Thank you @wonderland for organizing. We had so much fun
juancito 🎹 retweeted
The Wonderland CTF was a blast!
Huge congrats to all the teams, especially “STACK TOO DEEP”, “NADA ESPECIAL” and “SECSEE”.
Oh, also: apply.wonderland.xyz 👉👈
juancito 🎹 retweeted
We won 1st!! @usmannk @juancito @DrasticWM & adriro . Thank you @wonderland for organizing. We had so much fun
The Wonderland CTF was a blast!
Huge congrats to all the teams, especially “STACK TOO DEEP”, “NADA ESPECIAL” and “SECSEE”.
Oh, also: apply.wonderland.xyz 👉👈
juancito 🎹 retweeted
I met the team behind Unblind yesterday and I love the product...
When you are about to make a transaction, it sends you a telegram message in plain english that describes what will happen!
We all know blind signing is a problem and this is a great step!
link to MM snap:
juancito 🎹 retweeted
Wrote a post for the OZ blog 🔍
If you’ve ever wondered how Ethereum Execution Clients validate & process blocks/txs, this is a good place to start.
I also dig into newer concepts like System Contracts & EL→CL Requests that unlock powerful use cases ⚡
juancito 🎹 retweeted
A critical vulnerability I found in code forked from @1inch could have drained ~650k COVE tokens from @cove_fi contracts. Here's how the attack worked and how it was responsibly disclosed 🧵
On June 12, 2025, a critical reentrancy vulnerability was identified by @adrianromero @yAuditDAO @electisec in Cove’s liquidity mining program and promptly neutralized. No user funds were lost, and 652,565 non-transferable COVE tokens were secured as a precaution.
The vulnerability was introduced in @1inch [email protected], and was integrated by Cove. This variant was never deployed within @1inch infrastructure.
juancito 🎹 retweeted
On June 12, 2025, a critical reentrancy vulnerability was identified by @adrianromero @yAuditDAO @electisec in Cove’s liquidity mining program and promptly neutralized. No user funds were lost, and 652,565 non-transferable COVE tokens were secured as a precaution.
The vulnerability was introduced in @1inch [email protected], and was integrated by Cove. This variant was never deployed within @1inch infrastructure.
Fun challenge. Got 5th
🎉 Secureum RACE-38 Results 🎉
💨 Number of Runners: 47
⚖️ Median Score: 3/8
🥇 Top Score: 6.5/8
🙏 Designer: @windhustler
✍️ Reviewer: @patrickd_de ventral.digital/posts/2025/3…
🏆🏆 Top 32 Leaderboard 🏆🏆
