Sergio Grind ⛓️

Hemos propuesto un sistema para transacciones electrónicas sin depender de la confianza - Satoshi Nakamoto.

[Philip Johnston @PhilipJohnston]

Did you know that humanity has never launched a spacecraft to another star? That is about to change! I'm super excited to share that my cofounders, @AdiOltean, @EzraFeilden, and I, have created a non-profit to attempt to send humanity’s 𝗳𝗶𝗿𝘀𝘁 𝘀𝗽𝗮𝗰𝗲𝗰𝗿𝗮𝗳𝘁 𝘁𝗼 𝗮𝗻𝗼𝘁𝗵𝗲𝗿 𝘀𝘁𝗮𝗿… and we need your help!

We have formed a non-profit called The @FermiExplorer Mission with the goal of launching a minimum viable spacecraft to Alpha Centauri, the nearest star system, leaving in 3 years and arriving in around 80,000 years. We hope it will be both the first spacecraft to leave Earth for another star, and the last to arrive, as per this concept video!

The mission is intended to make the idea of interstellar travel real, and to encourage more people to confront one of humanity’s biggest unanswered questions when we look beyond our planet: "Where is everybody?" (the Fermi Paradox)

The mission has four high-level objectives:
- Aim: To launch the first spacecraft to another star. It should get at least 99% of the way to the nearest star system, Alpha Centauri, within 80,000 years.
- Payload: It should have at least a 1kg, 10x10x10 cm payload.
- Schedule: It should launch before the end of 2029
- Cost: It should cost less than $15M to design, build, launch, and operate.

The mission was planned with the help of the folks at @astrodigitalgeo, @MattGialich and the folks at @AstroForge, and @alexwg+@matthew_pines physical AI lab PSI, who devised the final mission profile. The mission will be executed by full-time program manager @GarrettJameson, who joins us after 10 years as a US Air Force Officer, in collaboration with a US bus manufacturing partner that will be selected over the coming months.

We will need your help to complete the mission, so if the idea of the mission excites you, please check out the Fermi Explorer website in the comments to find out more about why we are doing the mission and how to get involved!

Thanks to London Studio @ZeroOneCreative and @ashkan01C for producing the concept video 🙏🙏

[santi @santtiagom_]

si querés construir tu primer agente de IA, empezá por una tarea chica y concreta.

por ejemplo: buscar ofertas de trabajo y enviarte solo las que coincidan con tu perfil.

1) definí el objetivo y las instrucciones

indicá qué puestos debe buscar, qué requisitos priorizar, cuáles descartar y cuándo considerar terminada la tarea.

2) elegí un modelo

podés usar GPT, Claude o Gemini para leer cada oferta, compararla con tu perfil y decidir si es relevante.

3) creá sus tools

una para buscar ofertas, otra para guardarlas y otra para enviarte las seleccionadas. cada tool puede ser una función que consulta una API o ejecuta una acción.

4) construí el loop

el modelo decide qué tool usar, observa el resultado y elige el siguiente paso hasta completar la tarea.

podés programarlo directamente o usar LangChain, LangGraph u OpenAI Agents SDK.

5) agregá memoria si la necesita

guardá tus preferencias, las ofertas que ya revisó y el estado necesario para continuar entre ejecuciones.

6) creá evals

armá una lista de ofertas que debería aceptar o descartar y compará sus decisiones con los resultados esperados.

cada vez que cambies el modelo, las instrucciones o las tools, volvé a ejecutar esos casos para comprobar si realmente mejoró.

7) definí cómo manejar errores

agregá reintentos para errores temporales, límites de pasos, tiempo y costo, y confirmación humana antes de acciones importantes.

también registrá qué tools utilizó y qué resultados obtuvo para poder entender por qué falló.

un agente confiable debería completar la tarea de forma consistente, dejar claro qué hizo y, si no puede continuar con seguridad, detenerse e incorporar a una persona en el proceso (human in the loop).

la mejor forma de aprender sobre agentes es construir uno de punta a punta.

[Sergio Grind ⛓️ @SergioGrind]

@yul_magdaleno Hay algún grupo en GDL ?

[Nitin Gavhane @NitinGavhane_]

Cybersecurity X accounts worth following (Part 2):

1. @SwiftOnSecurity — Windows security
2. @briankrebs — Cybercrime research
3. @troyhunt — Breaches & HIBP
4. @thegrugq — OPSEC & tradecraft
5. @cyb3rops — Detection engineering
6. @mikko — Malware research
7. @_JohnHammond — CTFs & malware
8. @NahamSec — Bug bounty & recon
9. @LiveOverflow — Technical hacking
10. @HackingDave — Red teaming
11. @harmj0y — Active Directory
12. @_wald0 — BloodHound & AD
13. @enigma0x3 — Windows security
14. @gentilkiwi — Mimikatz & Windows
15. @_RastaMouse — Red team tools
16. @SpecterOps — AD security
17. @TrustedSec — Red team research
18. @BishopFox — Offensive security
19. @Horizon3Attack — Exploit research
20. @Synacktiv — Offensive research
21. @TheDFIRReport — Incident reports
22. @sans_isc — Threat intelligence
23. @HuntressLabs — Threat research
24. @13CubedDFIR — DFIR training
25. @EricRZimmerman — DFIR tools
26. @Velocidex — Digital forensics
27. @SigmaHQ — Detection rules
28. @hakluke — Bug bounty tools
29. @codingo_ — Pentesting & recon
30. @EdOverflow — Security research
31. @filedescriptor — Bug hunting
32. @orange_8361 — Exploit research
33. @InsiderPhD — Security education
34. @pentest_swissky — Payloads & pentesting
35. @Hacker0x01 — Bug bounty
36. @bugcrowd — Bug bounty programs
37. @intigriti — Bug bounty programs
38. @GossiTheDog — Vulnerability analysis
39. @malwrhunterteam — Malware hunting
40. @hasherezade — Malware analysis
41. @taviso — Vulnerability research
42. @IntelTechniques — OSINT
43. @CISAgov — Security advisories
44. @MITREattack — ATT&CK framework
45. @BlackHatEvents — Security research & conferences

Save this list. Build your cybersecurity feed with signal, not noise.

#CyberSecurity #BugBounty #EthicalHacking #InfoSec #Pentesting #RedTeam #BlueTeam #DFIR #OSINT #ThreatIntel

[Miguel Ángel Durán @midudev]

Una joya de repositorio. Te da todos los pasos para proteger y asegurar tu servidor Linux.

Si tienes un VPS, esto es la clave:
→ https://t.co/yJD2GnXFPj

[Abdulkadir | Cybersecurity @cyber_razz]

GRC Cybersecurity Roadmap

Beginner → Pro

If you want to break into Governance, Risk & Compliance, follow this path 👇:

[mRr3b00t @UK_Daniel_Card]

I made a little tool which you can use (with or without an LLM) to make (I think very cool) network diagrams, business process diagrams, and it features a journey mode to walk people through things!
https://t.co/qCbspVmAq7

[Anthropic @AnthropicAI]

Today, we're kicking off the first phase of the research preview for Model Hardware Standard (MHS): a new standard for AI agents to safely operate physical equipment in scientific research and advanced manufacturing.

Read more: https://t.co/XQ2y9EW7Af

[Sergio Grind ⛓️ @SergioGrind]

@RenzoUbeira @santtiagom_ Hola, se llama K6 es de grafana labs lo que andas buscando. Es open y es muy bueno

[Agus Bellini | Always hiring @soyagusbellini]

El mercado tech donde llovían ofertas por poner "React" o "Python" murió. Con los layoffs y tanta competencia, creé esta guía con lo que me sirvió a mí y mucha otra gente crack con exp para que puedan conseguir algo rápido y mejor.

Espero les sirva :) https://t.co/zk2tAfkEbg

[Anthropic @AnthropicAI]

Many drugs work by binding to a specific target in the body and blocking or changing what it does. An important first step in the drug development process is designing a molecule that can bind tightly to its target. Traditionally, that's meant weeks or months of expert work per target, sifting through a large number of candidates to identify the few that work.

We wanted to test if Claude could successfully design novel protein binders from scratch (also called de novo design). With a protein design prompt written by a human expert, Claude autonomously designed protein binders against 14 out of 15 targets.

We then worked with Adaptyv Bio and Twist Bioscience, who independently built and tested the proteins Claude designed.

[The Linux Foundation @linuxfoundation]

In 2001, Revolution OS was released. The documentary captures the origin story of GNU, Linux, and the free software movement, told by the people who built it, including Linus Torvalds and Richard Stallman.

https://t.co/yybMmCciWE

#Linux35

[Caro La Reclu IT @larecluIT]

🚀 Vacante | DevOps Jr. 🇲🇽
Busco Ingeniero/a de Software DevOps Jr.

💰 $25K MXN libres mensuales
🏠 100% remoto | Solo México
🎁 Prestaciones de ley y superiores

🔎 1+ año de experiencia profesional en el rol de DevOps
💻 Git | CI/CD | Windows/Linux | BD
☁️ AWS, Azure o GCP
⭐ Docker y scripting deseables
📩 CV: [email protected]
Asunto: DevOps Jr.
#DevOps #DevOpsJr #VacantesTI #TrabajoRemoto

[GenBio AI @genbioai]

Today we're releasing a preview of AIDO Cell, a world model of the human cell.

It simulates one cell across DNA, RNA, protein, through regulatory networks and whole-cell behavior. Not four models handing results to each other. One system.

[Sefyu @Sefyu64]

My list of 5 IAM specializations that will explode in 2026.

Some are already extremely in demand. (#2)

You can specialize in any of these 5 and make a lot of money in the next years.

1. AI Agents Identity 👇🏽

[Sefyu @Sefyu64]

How to land a six-figure job in Identity and Access Management (IAM) in 2026.

One of the highest-paying jobs in tech that nobody talks about.

I've been in the field for 6 years and built a solid understanding of the domain without ever studying it.

If I had to do it again, here's how I would get into IAM: 👇

[IT Guy @T3chFalcon]

Did you know there's a type of phishing attack that defeats MFA completely.

It's called a reverse proxy phishing kit and it's one of the fastest-growing attack techniques in cybersecurity.

Traditional phishing works by using fake login page. you type your password. attacker gets it. if you have MFA enabled, the stolen password alone is useless. attacker gets stopped at the second gate.

reverse proxy is different.

instead of a fake page, the attacker sets up a live proxy server between you and the real website. when you click the phishing link, you connect to the attacker's server. the server connects to the real Microsoft, Google, or Okta on your behalf. it fetches the real login page and serves it directly to you, pixel for pixel in real time.

you're looking at the actual login page. you type your real password. the proxy relays it to Microsoft. Microsoft sends back an MFA prompt. the proxy relays that to you. you approve it. Microsoft sends back a session cookie.

the proxy intercepts the cookie before it reaches your browser.

You're logged in, so is the attacker using the same session.

Tools used: Evilginx, Modlishka, Muraena. all open source. all free. all with pre-built templates for Microsoft 365, Google Workspace, Okta, and PayPal.

commercial versions: EvilProxy, Tycoon 2FA, Mamba 2FA, Starkiller. Sold as subscription services on Telegram.

Reverse proxy phishing surged 139% between September 2025 and March 2026, nearly 1 in 4 phishing links now carries a reverse proxy payload.

18 US universities hit last year. Microsoft 365 campaigns targeting thousands of organizations globally.

The only authentication method that stops this completely: FIDO2 passkeys and hardware security keys. They bind credentials to the real domain. The proxy can't replay them because the credential was never issued for the proxy's domain.

Everything else, SMS codes, authenticator apps, push notifications can all be relayed.

[Sergio Grind ⛓️ @SergioGrind]

@iximiuz Esto es lo que hace AWS + SSM + documento

[Sergio Grind ⛓️ @SergioGrind]

@BettaTech Gracias lo checo