@bsdaemoni
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MTS at does it matter? Advisor of Grsecurity. BYOS Commitee Member of OffensiveCon, Langsec, DistrictCon, Secdev
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Joined September 2009
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Despedida da H2HC! (My goodbye to H2HC!)
(English Version Just After the Portuguese)
TLDR: Para aqueles que não conseguem ler uma carta longa, estou saindo da organização da H2HC a partir do ano que vem (este ano ainda estarei à frente do evento, como sempre). Todas as responsabilidades do evento ano que vem estarão com Balestra, um dos meus melhores amigos e alguém que sempre se dedicou e muito para o sucesso do evento. Acredito plenamente que o Balestra está totalmente capacitado a garantir o futuro da H2HC. Peço a todos que o apoiem nessa jornada de levar a H2HC ao futuro!
Não posso negar que escrevo esta carta com o coração pesado! Mas ao mesmo tempo, estou decidido de que esta é a decisão certa e a melhor para o futuro da H2HC e da comunidade Brasileira de segurança da informação, pesquisas e hacking.
Participo há 21 anos da organização do evento. Interessantemente, eu entrei para a organização durante a primeira edição, quando o evento já estava em andamento (que bagunça que foi! mas também uma das edições mais verdadeiras no sentido real do espírito do hacking). Passei a ser o principal organizador quando na 5a edição o comitê que organizava (umas 8 pessoas) estava, pra variar, dividido em diferentes ideias/opiniões e tudo estava atrasado. Na época eu disse que iria sair e nas discussões que decorreram o grupo decidiu que eu deveria continuar com o evento. O combinado era simples: manter o espírito original! A ideia de que as pessoas devem se encontrar, a ideia de que o hacking é uma contra-cultura, a ideia de que o conhecimento não deve ser controlado. Convidei então meu grande amigo, Filipe Balestra a se juntar a mim, e ambos sabíamos que seria um grande desafio. E mais 16 anos se passaram!
E o que mudou? Eu mudei, o mundo mudou, a comunidade mudou, os tempos mudaram, e a H2HC mudou! O evento cresceu muito mais do que esperávamos (e pra ser sincero, apesar de eu constantemente controlar o crescimento). A demanda de tempo para manter as coisas alinhadas com o que eu acredito e vejo pro evento passou a ser gigante (pra terem uma ideia, eu uso algo em torno de 1000 horas por ano). Temos algo em torno de 3000 pessoas por dia, 20+ villages, 18+ palestrantes internacionais (muitos vindo para as villages e não apenas para a grade principal do evento). Temos a revista, que aumentou em muito em termos de qualidade técnica nos últimos anos, graças a ajuda impressionante do Gabriel Barbosa. Temos os badges eletrônicos, que apesar de não conseguirmos distribuir a todos, continuam se tornando referência no mundo pela criatividade (tivemos desde um PCB com o layout do mapa do Brasil, até layout de uma arma com laser, implantes e muitos outros - e este ano tenho certeza de que o que virá vai impressionar a todos) - graças ao apoio do Brian Butterly, outro grande amigo meu que adorou a cultura real do evento e topou o desafio. Temos algumas das melhores palestras da área, literalmente palestrantes que não vão em outros eventos e acabam trazendo um reconhecimento internacional para a H2HC que muitos eventos (bem maiores/tradicionais) apenas desejam ter - graças, em grande parte, ao comitê que avalia as palestras. Temos bebida gratuita (incluindo refrigerantes, mas whiskey e cerveja também - tivemos até a nossa própria vodka e nossa própria cerveja), pois acreditamos na interação entre as pessoas. E quem anda pelo evento acaba descobrindo o que é diversidade de verdade pois temos literalmente todos os tipos de pessoas, com um mantra simples: o que todos temos em comum ali é a busca pelo conhecimento. Somos intolerantes em relação à preguiça e a falta de curiosidade. Doamos ingressos para quem tem interesse, mas não tem condições. Tudo isso com verba zero de marketing.
Obviamente todos os anos eu tenho aqueles momentos únicos que justificam todos os esforços. Ano passado, por exemplo, alguém me parou no elevador e disse que mudou para a área de segurança pois entrou em contato comigo há muito tempo atrás e eu doei um ingresso para ele conhecer e ver se realmente se apaixonava. Um dos meus grandes amigos recentemente me perguntou se eu lembrava como eu o conheci… e basicamente foi na H2HC, quando também dei uma oportunidade a ele. Um dos voluntários que trabalham no evento (o evento é todo via voluntários, nós não temos funcionários, não tiramos um único centavo, toda a renda gerada é investida em fazer algo ainda melhor) hoje em seus mid-20s começou no evento quando tinha 14 anos! Literalmente eu tive de assinar um formulário de responsabilidade pelo menor, pois os pais dele queriam ter certeza que iríamos tomar todos os cuidados necessários. Vemos no evento gerentes, diretores e até CISOs de grandes empresas literalmente correndo pra lá e pra cá carregando caixas e ajudando. Temos pessoas agora famosas na área que palestraram pela primeira vez na conferência (e quantas e quantas vezes passei madrugadas com palestrantes ajudando nos PoCs, revisando conteúdos, etc). Quantas vidas foram mudadas e quantas oportunidades foram criadas graças ao evento! (pessoas que se conheceram ali, projetos que surgiram dali, trabalhos e muito mais). São tantas histórias que sinceramente daria um livro (e nem sequer começamos a falar das festas!). Mas então, porque sair?
Para mim, liderar sempre foi sobre servir. Minha fé (nunca fiz segredo de que acredito em Deus) também me faz acreditar na importância de doar e compartilhar com os outros (e obviamente ninguém precisa acreditar no que eu acredito para fazer o bem ao mundo). Também sempre me senti bem em retribuir à comunidade por tudo que eu aprendi graças aos esforços de outros que compartilharam o que aprendiam. Eu sempre acreditei na frase: “O que nos trouxe até aqui, não necessariamente nos levará até ali”. Ou seja, temos de nos adaptar constantemente. Por exemplo, um evento de hacking ter redes sociais é um pouco engraçado. Mas ao mesmo tempo, é o mundo moderno e a forma como MUITOS se informam e se comunicam (dói meu coração, no entanto, ver um videozinho sem nenhuma informação verdadeira sendo visto pelo equivalente de 30 dias em termos de horas gastas). Como evitar excluir talentos que ainda não tiveram a exposição à sub-cultura e ao mesmo tempo não sucumbir totalmente ao ‘mainstream’? Esse sempre foi o grande desafio. Algo que eu sempre achei que eu estava extremamente bem posicionado e capaz de fazer. Quantas e quantas vezes não recebemos opiniões de formas de melhorar, e insistimos em não mudar (ou mudar, mas não totalmente). Sempre pensando na evolução necessária para que o evento continue tendo o que prometeu desde o início, mas ao mesmo tempo sobreviva a realidade do mundo moderno. Nossa posição sempre foi: pode até ser que em algum momento não exista mais a necessidade da H2HC. E isso é ok! Pode ser que em algum momento a comunidade já tenha descoberto outras formas de interagir, e a comunidade decida que o evento deve acabar! Para ser claro: não acredito que tal momento tenha chegado! Eu jamais quis ser um ‘organizador’ de eventos. Não sou um investidor, não sou uma pessoa de negócios e não tenho a habilidade política necessária para levar o evento para o próximo nível. A H2HC tem a oportunidade de crescer e se expandir. Isso traz uma série de vantagens, como locais melhores, mais atividades, atingir mais pessoas, etc. Mas para isso, a organização precisará se profissionalizar, o que exigirá ainda mais tempo (potencialmente uma dedicação exclusiva) ou diversas outras opções (prefiro não elaborar pois não quero deixar opiniões, confio plenamente que o Balestra saberá o melhor caminho a seguir). Não acredito que sou apaixonado por essas atividades como sou pelos resultados que elas irão gerar. E portanto não sou a pessoa mais qualificada a conduzir nesse caminho. Continuarei focando em ser um pesquisador que se preocupa com o mundo e com as pessoas. Assistirei, com grande entusiasmo, ao futuro da comunidade no Brasil e no mundo.
Abraços,
Rodrigo (BSDaemon)
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==== ENGLISH ====
================
My goodbye to H2HC!
TLDR: For those that can’t read a long letter, I’m leaving H2HC’s organization starting next year (this year I’m still responsible for the conference, as usual). For next year, all the conference responsibilities are with Filipe Balestra, one of my best friends and someone that has dedicated a lot for the success of the conference over the years. I truly believe that Balestra is totally capable of guaranteeing the future of H2HC. I ask that everyone support him in the journey of bringing H2HC to the future!
I cannot deny that I write this letter with a heavy heart. But at the same time, I’m convinced that this is the right decision and the best one for the future of H2HC and for the Brazilian information security, research and hacking communities.
I've been involved with H2HC for 21 years now. Interestingly, I joined the organization during the first edition, while the conference was ongoing (what a mess that edition was! but also, it was one of the truest ever to the hacking spirit). I became the main organizer when, during the 5th edition, the organizing committee (about 8 individuals) was, as usual, divided between different ideas/opinions and everything was late. At the time I was done with it, and decided to leave, but during the discussions the group decided that I should continue with the conference alone. The agreement was simple: Keep the original spirit! The idea that people should meet, the idea that hacking is a counter-culture, the idea that knowledge should not be controlled. It was then that I invited my friend, Balestra, to join me, and we both knew that it was going to be a huge challenge. 16 years later, I believe we’ve done well!
So, what changed? I’ve changed, the world has changed, the community changed, the times changed and H2HC itself has changed with it. The conference grew way more than we'd expected (and to be honest, besides me constantly trying to prevent it). The time demands to keep everything aligned with my personal beliefs and expectations for the conference became huge (just to give an idea, I use something around 1000 hours per year for the conference). The conference has around 3000 people each day, 20+ villages, 18+ international speakers (with many coming to give talks at the villages, not only on the main conference track). We have a magazine that improved a lot in terms of quality thanks to the amazing help of Gabriel Barbosa. We have electronic badges that, while not given to everyone, are still recognized in the community due to the creativity (we had a PCB with the Brazilian map as the layout, we had the layout of a gun with a laser pointer, we had implants and many more - and I’m pretty sure this year’s one will blown everyone’s mind) - all thanks to the support of Brian Butterly, another friend of mine that loved the true culture of the conference and accepted the challenge. We have some of the best talks of this field, with speakers that literally do not go in any other conference and end up bringing international visibility to H2HC, a visibility that other conferences (sometimes bigger, more traditional) only hope to have - and that is thanks, in a huge part, to the technical selection committee. We have an open bar (including soda, whiskey and beer - we even had our own custom beer and custom vodka), because we believe in the interaction between people. And anyone who walks around the conference can see what true diversity is, because it is indeed for everyone. We have all kinds of people, and a unique mantra: everyone there has a common goal in pursuing knowledge. We are all intolerant to laziness and to the lack of curiosity. We donate tickets to those that are interested, but can’t afford. And we do all that without a single expenditure in marketing.
Year after year though we have those unique moments that justify it all. Last year, for example, someone stopped me at the elevator and said that they’ve moved to the security field after having reached out to me sometime before and I’ve donated a ticket to them to see if they would feel passion for it. One of my good friends recently asked me if I remembered how we first met… It was during H2HC, when I’ve also given him an opportunity. One of our volunteers of the conference (the conference is run by volunteers, there are no employees, we do not get a single cent, all the money is reinvested in making something even better), today in their mid-20s started in the conference when he was just 14 years old! I’ve literally had to sign a responsibility agreement since his parents wanted to be sure that we would take all the necessary precautions. During the conference we see managers, directors and even CISOs of large companies literally running around carrying boxes and helping. We have individuals that are now famous in our field that had their first talk at H2HC (and many, many times I’ve spent nights helping speakers with their PoCs, reviewing content and more). Many lives were changed and many opportunities were created thanks to the conference! (people that met there, projects that started there, work opportunities and so much more). There are so many back stories that we could literally fill an entire book (and we are not even talking about the parties!). So then, why leave?
For me, to lead is to serve. My faith (it was never a secret that I believe in God) makes me believe in the importance of donating and sharing with others (obviously no one needs to have the similar faith to do good for the world). I’ve also always felt good in paying forward to the community for all that I’ve learned from others that shared what they’ve learned. I’ve always believed in the phrase: “What got us here, won't necessarily get us there”. Which means, we have to constantly adapt. For example, a hacking conference that has social media is a bit funny. But at the same time, it is the modern world and the way that MANY get information and communicate (it hurts my heart, though, to see a video without any actual information, seem by the equivalent of 30 days in terms of hours spent). How do we avoid excluding talent that were never exposed to the sub-culture but at the same time, do not succumb to the mainstream? That was always the big challenge. Something that I always felt extremely well positioned and capable of doing. There were many times in which we’ve received feedback on how to improve, but we insisted on not changing (or change, but subtly). Always thinking on the needed evolution to keep the conference focused on our original promises, while making sure it survives to the modern reality. Our position has always been: maybe at some point in time, there will be no need for H2HC. And that is totally ok! Maybe in some moment the community will have other means to interact, and the community itself will decide that the event should end! But to be clear: I do not believe that time is now. I never wanted to be a conference ‘organizer’. I’m not an investor, I’m not a businessperson, and I do not have the necessary political skills to conduct the conference to the next level. H2HC has the opportunity to grow and to expand. This brings a lot of advantages, such as better venues, better activities, better reach, etc. But for that, the organization has to be more professional, and that demands more time (potentially, a fully dedicated individual) or many other options (I rather not elaborate or share opinions, I just want to emphasize that I trust that Balestra will know the best path). I would not be passionate about the work that has to be done as I’m passionate for the results that I believe the upcoming work could generate. And as so, I’m just not the best person anymore to conduct the journey. I will continue with my focus as a researcher that cares about the world and about people. I will watch, with a lot of enthusiasm, the future of the community in Brazil and in the world.
Hugs,
Rodrigo (BSDaemon)
Rodrigo Branco retweeted
huge news, dream job unlocked: I started my PhD in CS at @dartmouth last week, where I’m working with @sergeybratus & Christophe Hauser in the Trust Lab. happy&proud to step into this new era, work on my most ambitious UEFI research projects yet, collab w my incredible lab cohort
Rodrigo Branco retweeted
git.kernel.org/pub/scm/linux… grsec not affected (this was a case we were concerned about with the naive API conversions, same as with the earlier strlcpy conversions that all got replaced)
All that plus working with pi3!!
I'm hiring an exceptional Offensive Security Researcher for my team at NVIDIA (Offensive Security Research - OSR).
Firmware, microcode, RISC-V, hypervisors, and shipping mitigations like HW CFI, Memory Tagging, and Pointer Masking from the ground up.
jobs.nvidia.com/careers?quer…
Rodrigo Branco retweeted
Replying to @bsdaemon
@bsdaemon and others spoke about abusing eh_frame and exception handlers for exploitation too. It's funny that I remembered his presentation about this topic just a few days ago.
Overwriting the Exception Handling Cache Pointer – Dwarf Oriented Programming
defcon.org/images/defcon-20/…
i thought read() was a syscall wrapper, but it can dlopen a bytecode interpreter and execute your code
"house of windy" turns this into leakless code execution with only OOB null byte writes
pepsipu.com/blog/2026-09-dwa…
Rodrigo Branco retweeted
Our CFP is open and we're especially looking for hacking magic 👾🪩🪄
Learn more about the content we're looking for on our Sessionize!
sessionize.com/districtcon
Rodrigo Branco retweeted
Your weekend reading assignment has arrived early.
A first taste of the upcoming, still-under-wraps Phrack 73: “THE PROXY THAT MADE NO SENSE” by @mikko.
archives.phrack.org/dl/73/th…
Rodrigo Branco retweeted
The more interesting part is nobody seems concerned at all about how some patch from December which was already dropped suddenly resurrected itself out of nowhere despite nobody publicly suggesting it be added again. Bugs are bugs I guess🤷♂️
Rodrigo Branco retweeted
Replying to @LiveOverflow
I wish Gerardo Richarte's presentation at Hackers to Hackers 2024 was released. He talked about using hacking at his company (Satellogic) to fix satellite issues and reduce costs, something GPS-related. As far as I can tell, the slides weren't released.
Rodrigo Branco retweeted
New issues of @phrack have arrived just in time for the conference!!
Rodrigo Branco retweeted
We're super excited to announce that hardcopies of Phrack 73 will be available at @UnpromptedAU in Sydney, @unpromptedconf in SF, and @tengu_sec in Japan! Catch the drop irl!
Oh, what a surprise that confidential computing is broken (again): thehackernews.com/2026/09/ne… (this time Intel TDX using a DDR5 interposer)
"A hero is no braver than an ordinary man, but he is brave five minutes longer"
🚨 TODD BEAMER, UNITED 93 PHONE CALL: "LET'S ROLL" 🇺🇸
Todd: Hello… Operator… listen to me. I can’t speak very loud. This is an emergency. I’m a passenger on a United flight to San Francisco. Our plane has been hijacked.
Lisa: I understand. Can they see you?
Todd: No. There are three that we know of. They have knives — razor knives, like box cutters. Someone announced from the cockpit there was a bomb. It sounded fake.
Lisa: Your name?
Todd: Todd Beamer. United Flight 93.
Todd: They killed one passenger in first class. They forced most of us back. Fourteen of us here. Five flight attendants. The guy with the bomb ordered us to sit on the floor.
Lisa: Are you okay?
Todd: We’re going down… wait. No. We’re leveling off. We changed directions. We’re flying east again.
Todd: A guy named Jeremy called his wife. She told him two planes hit the World Trade Center. Lisa, is that true?
Lisa: I have to tell you the truth. It’s very bad. Both towers are gone. A third plane hit the Pentagon. Our country is under attack. I’m afraid your plane may be part of their plan.
Todd: Oh God. Lisa, will you do something for me? Call my wife and my kids. Promise me you’ll call.
Lisa: I promise.
Todd: Our home number is… You have the same name as my wife. Lisa. We’ve been married ten years. She’s pregnant with our third child. Tell her I love her. I’ll always love her. We have two boys — David, he’s 3, and Andrew, he’s 1. Tell them their daddy loves them and he is so proud of them. The baby is due January 12th. I saw an ultrasound. We still don’t know if it’s a girl or a boy.
Lisa: I’ll tell them. I promise, Todd.(Lisa patches in the FBI.)
Agent: Todd, your plane is on a course for Washington. Best guess is the White House or the Capitol.
Todd: I understand. I’ll be back.
Todd: Everyone knows this isn’t a normal hijacking. We have decided we will not be pawns in their plot.
Lisa: What are you going to do?
Todd: Four of us are going to rush the one with the bomb. Then the cockpit. A stewardess is getting boiling water. We’ll take them out.
Todd: Would you pray with me? [They pray the Lord’s Prayer.] Yea, though I walk through the valley of the shadow of death, I will fear no evil, for thou art with me.
Todd: God help me. Jesus help me. Are you guys ready? Let’s Roll.
SOURCE: @SterlingMSnow
Rodrigo Branco retweeted
BREAKING: Terry Liu, the Chinese national arrested this week in Maine, has been charged with illegally modifying the hardware of Customs and Border Patrol computers at the Maine-Canada border.
Liu, who described himself as a native of Guangzhou, China, was caught on camera breaking into CBP computers and replacing processors and memory devices before re-inserting them into government networks.
More details to come...
Rodrigo Branco retweeted
Exciting announcement: we are honored be hosting the Phrack 73 (@phrack) hard cover launch exclusively at unprompted!! Thanks to the Phrack team for putting this together, it's a banger!
Rodrigo Branco retweeted
Hello London 🇬🇧
The Phrack team is here and we left our mark around the city.
If you can find any of these stickers, email us for a chance of getting a physical copy of Phrack 73 delivered to your doorstep.
Send proof to [email protected] and have fun!
Rodrigo Branco retweeted
Private Phrack 73 pre-release party in London. En-route and just passing by MI6. WHO DID THIS????
Rodrigo Branco retweeted
Bertrand Russell’s Ten Commandments of Critical Thinking and Democratic Decency
1. Do not feel absolutely certain of anything.
2. Do not think it worth while to proceed by concealing evidence, for the evidence is sure to come to light.
3. Never try to discourage thinking for you are sure to succeed.
4. When you meet with opposition, even if it should be from your husband or your children, endeavor to overcome it by argument and not by authority, for a victory dependent upon authority is unreal and illusory.
5. Have no respect for the authority of others, for there are always contrary authorities to be found.
6. Do not use power to suppress opinions you think pernicious, for if you do the opinions will suppress you.
7. Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric.
8. Find more pleasure in intelligent dissent than in passive agreement, for, if you value intelligence as you should, the former implies a deeper agreement than the latter.
9. Be scrupulously truthful, even if the truth is inconvenient, for it is more inconvenient when you try to conceal it.
10. Do not feel envious of the happiness of those who live in a fool’s paradise, for only a fool will think that it is happiness.