@Dartmouth ISTS Fellow and CEO of defense startup. Founder of AIxCC @DARPA. Former @DEFCON CTF organizer.

From one Washington to another
Joined May 2011
I knew Theo back when he was typing his lecture notes in LaTeX
This particular reply has pushed me over the edge. I have finally decided: there will never be native LaTeX support in T3 Code.
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Perri Adams retweeted
good morning our cfp is still open until 11:59 pm on October 30 plz send us your best hacking content sessionize.com/districtcon
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Excited to be working with some of the best folks in the industry to review YOUR submissions! CFP Closes Oct 30 pls submit 🪩💕 DistrictCon.org/cfp @perribus @caseyjohnellis @sergeybratus @rmspeers @bsdaemon @ashl3y_shen
Announcing our CFP Review Board for DistrictCon Year 2! We look forward to reading all of your amazing submissions on all things reverse engineering, tooling, exploits & vulns, and select non-technical and policy talks 🪩👾✌️ @perribus @bsdaemon @sergeybratus @rmspeers @jaylagorio @caseyjohnellis @ashl3y_shen
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Perri Adams retweeted
Announcing our CFP Review Board for DistrictCon Year 2! We look forward to reading all of your amazing submissions on all things reverse engineering, tooling, exploits & vulns, and select non-technical and policy talks 🪩👾✌️ @perribus @bsdaemon @sergeybratus @rmspeers @jaylagorio @caseyjohnellis @ashl3y_shen
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Perri Adams retweeted
Old post but good one - our CFP for @DistrictCon year 2 closes end of this Oct!! Submit pls DistrictCon.org/cfp
Our CFP is still open! Submit your talks on -bizarre reverse engineering projects -tool releases -exploits and vulnerabilities -Non-technical and policy talks on cyberz districtcon.org/cfp
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Tell that to Andrew Wiles
Sorry, these are proofs not a video game or a software. You can’t ship it and keep releasing patches!
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Perri Adams retweeted
Margaret Hamilton, who led the 100-person team that wrote the onboard software for the Apollo missions, has died. nyti.ms/3U9IrTj
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That was fast
We've officially sold out of Early Bird tickets! Our CFP is still open for Hacking talks & Policy Roundtable submissions and The Junkyard is still open. Folks that are selected for any of these receive free tickets - we highly recommend submitting! districtcon.org/cfp districtcon.org/junkyard
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This year at Flare-On 13, I wanted to race other people's AIs. I mean, is it really all just prompting? Or do techniques and tools still matter? They do! My system got 3rd 🥉. A part of its success was our decompiler, Kuna. It was used exclusively to solve 6/9 challenges.
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Welcome to Sydney, weary travellers! Make sure to rest up for the conference 😌 Go see some sites if you have time too! Get the ferry over to manly, do a bridge climb, or visit Taronga zoo. The blue mountains are also stunning but a bit more of a trek (~2 hrs to Katoomba)
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Perri Adams retweeted
The wait is over! 🚀 The talks for Hexacon 2026 are officially out, and the lineup is absolute fire 🔥 hexacon.fr/conference/speake…
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Personally I think basil is a lovely garnish and doesn’t deserve this kind of hate
We're publishing our most detailed threat intelligence report to date. It covers how people tried to misuse Claude—for cyberattacks, influence operations, surveillance, biology, and building weapons—and how we found and stopped them. We disrupted every operation in the report, and used the lessons from them to strengthen our safeguards. Where appropriate, we also shared what we found with authorities and other AI companies. These cases are not typical: we’re highlighting some of the most sophisticated misuse we’ve seen. But they’re especially important to discuss, because they show us where AI misuse is headed, where our safeguards work, and where they need to improve. We’re publishing this report so others can spot the same activity on their own platforms, and so we can give the public a clearer view of how emerging threats develop. Read the report: anthropic.com/threat-intelli…
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Perri Adams retweeted
SAINTCON is excited to announce that @perribus Perri Adams will be our Wednesday morning Keynote presenter! Perri brings a wealth of experience and knowledge to the stage, and we can't wait to hear what she has to share. Don't miss it! saintcon.org/keynotes/
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I'm actually not a believer in this tactic for anything but the simplest and most static of business problems. Partially because it's easy to underestimate the complexity of what you're really trying to ask the model to do long-term. Maybe this is especially true in security.
Training tiny models for special purpose use cases works so incredibly well if you have a great self improving recursive flywheel. Shopify ML team is on fire. finetuned 0.8b model beats GPT 5.6-sol xhigh in this very specialized task.
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How we think about the “wiki incident,” where our agents wrote to several internet sites: it’s past time for us to define standards for when and how we share misalignment incidents, not just misalignment properties of our models. Historically, we have treated misalignment largely as a research question, which gets communicated in research publications such as systems cards. This year, we’ve started to see misalignment cause new types of real-world impact. For the Hugging Face incident, where misalignment led to security impact to us and third parties, we followed a traditional security incident response playbook. We immediately started working with Hugging Face to understand what had happened and also disclosed publicly the very next day. Our investigation continues, and we are continuing to notify parties whom our models impacted in less significant ways. Prior to the Hugging Face incident, we saw early signs of agents using the internet in unintended ways, as reported in openai.com/index/how-we-moni…, deploymentsafety.openai.com/…, and openai.com/index/safety-alig…. We considered the wiki incident to be an instance of misalignment similar to the ones we’d shared. Our misalignment disclosure practices need to expand for this new phase of model capabilities. We and the larger AI community do not yet have a clear standard for how to report misalignment that shows up during training, evaluation, and deployment, including examples that don’t look like traditional security incidents but could provide insight into AI behavior and future risks. We’re working on a framework and will share it in upcoming weeks, and in parallel we're working with dozens of government regulatory agencies worldwide on these issues.
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4397328654844826923795068102505872571721883526553349659561256924505973939597593482272505698004801207988043088656411102133523080581 divides RSA-260
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Perri Adams retweeted
People coming to Australia for unprompted: while you're here you should consider going to @BSidesCbr - it's a few days after unprompted and a short one hour flight away!
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Perri Adams retweeted
When testing Astra on ExploitBench we found that it was able to achieve 100% ACE on all 41 CVEs So we made a contamination free internal port using only V8 CVEs from the past 3 months. Astra still showed a major capability increase over 5.6 and did so with a lot fewer tokens!
As we prepare to release Astra, we’re focused on making increasingly capable AI safe and broadly accessible. Astra represents a significant advance in cybersecurity capability, reaching the Critical threshold under our Preparedness Framework. We're previewing how we evaluated the model, how its safeguards have advanced alongside its capabilities, and what we'll continue to learn and improve. openai.com/index/path-to-ast…
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Perri Adams retweeted
Replying to @theojaffee
i think you can talk about computers executing code in an advanced way without jumping straight to human-like superlatives i feel like in an environment where people are going bananas with ai psychosis, the language of description is even more important
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Perri Adams retweeted
Exciting announcement: I am launching a new AI-focused company today named Umbriel (@Umbriel_AI)! Excited to do some cool research in the space 😎
Introducing Umbriel: a new company focused on LLM research and engineering, particularly the development of advanced AI-driven cybersecurity pipelines, as well as broader research into LLM tech. We have some exciting things planned. Watch this space! umbriel.ai/
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