Scott Arciszewski retweeted
Threshold signatures secure billions in crypto and increasingly run inside TEEs. But MPC and TEEs make different bets on trust: MPC spreads it across independent parties; TEEs concentrate it in the hardware manufacturer and its attestation infrastructure. blog.trailofbits.com/2026/09…
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Scott Arciszewski retweeted
New: from 404 Media. The catastrophic FBI hack also exposed the FBI's own hacking unit. The Remote Operations Unit is a highly secretive part of the FBI, responsible for making tools to break into peoples' devices. Some of their names are in the data 404media.co/fbi-hack-exposed…
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Scott Arciszewski retweeted
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Scott Arciszewski retweeted
People reached out and told me about problems this already caused. I wrote "FLAWED’s Flaws and What This Means for Industry Research" partially to support academics having to deal with FLAWED in conversations they’re having right now. But I also hope we learn from this.
There are glaring issues in this paper beyond the evaluation problems raised by Davi and ToB, including ones that make me question the ratio of human to AI assistance here, but a few are so egregious we should consider what research norms we are demanding from industry labs.
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Scott Arciszewski retweeted
A 2012 USENIX paper brought XML Signature Wrapping (XSW) attacks against SAML into the mainstream. SAML has repeatedly shown that complexity is the antithesis of security. Matt Schwager names 5 protocol design flaws enabling SAML's insecurity: blog.trailofbits.com/2026/09…
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Scott Arciszewski retweeted
I wrote a thing about this. sockpuppet.org/blog/2026/09/…
There's no reason you can't use an LLM to help you write. There's only one rule: you can't use a single word the LLM selects for you, even if it's better than your own; users detect LLM words in the parts per trillion. Here's what I've been using:
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Scott Arciszewski retweeted
“Who’s a good boy?!” Hackers just dumped the contents of a Flock camera. They found: 🔴Software explicitly detecting people, not just plates 🔴1.6 million images logged in 21 days 🔴Key to decrypt files stored on the device itself. Finds directly contradict Flock, which claims someone with physical access can't access images. Making it worse,@GainSec warned about the physical access issue more than a year ago & Flock downplayed it. And yeah, the Flock camera logged “Who’s a good boy?!” about every 2 minutes, all while plagued with errors, crashes & reboots. By @dmehro & @josephfcox wired.com/story/hackers-floc…
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Scott Arciszewski retweeted
Corporate Infosec sends a phishing test email, I click, and somehow I'm the asshole because "[I] failed the test; had this been real it would have destroyed the company network"? If me clicking can destroy the network, I'm not the one in this conversation who sucks at their job.
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Scott Arciszewski retweeted
Phishing Tests are some of the worst ideas around.
Corporate Infosec sends a phishing test email, I click, and somehow I'm the asshole because "[I] failed the test; had this been real it would have destroyed the company network"? If me clicking can destroy the network, I'm not the one in this conversation who sucks at their job.
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Scott Arciszewski retweeted
There are glaring issues in this paper beyond the evaluation problems raised by Davi and ToB, including ones that make me question the ratio of human to AI assistance here, but a few are so egregious we should consider what research norms we are demanding from industry labs.
.@1Password's FLAWED report says AI models produce a clean security fix only 26% of the time. Defenders shouldn't take that number seriously. • The six vulnerabilities were handpicked because their fixes were complex. Clean-fix rates ran from 3% to 60% depending on the bug, and the report averaged them together. • Agents set up to fail were counted in the headline figure. Two of 1Password's prompts instructed the agent to apply the wrong fix. Those trials make up 22% of the data. One evaluation mode prevented the agent from compiling or running any code, and it accounts for 36% of the data. • The report ran two models, GPT-5.5 at medium effort and Opus 4.8 at high. Neither was tested at its highest available setting, so the report says nothing about how more effort or stronger models change the results. • Several instruction and grading errors further undercut the headline, and are elaborated upon in the attached blog. We've spent four months submitting hundreds of AI-authored patches to widely adopted open-source projects as part of Patch the Planet. Our experience didn't match 1Password's report, so we did a full analysis across 186 AI-authored pull requests and 33,500 subsequent commits, benchmarked against 2,265 human-authored patches we graded across years of security engagements. blog.trailofbits.com/2026/09…
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Scott Arciszewski retweeted
Replying to @pbeyssac
The secret to comedy, is timing. 😂
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Scott Arciszewski retweeted
The secret to comedy is timing.
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I must be among an extremely small group of people (n=1?) that have both 1) trained a frontier LLM and 2) designed and synthesized custom viruses in a lab with my own two hands. And I think that the takes on AI killing us all by creating dangerous viruses is total bogus.
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Scott Arciszewski retweeted
Improved key recovery attacks against Classic McEliece by @sweis with help from Claude All standardized parameter sets for Classic McEliece are no better than NIST Level 1 now eprint.iacr.org/2026/1984
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Scott Arciszewski retweeted
Improved key recovery attacks against Classic McEliece by @sweis with help from Claude All standardized parameter sets for Classic McEliece are no better than NIST Level 1 now eprint.iacr.org/2026/1984
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I initially wrote the post-patch-validation skill to scratch my own itch. I hope more teams find it helpful to increase the signal-to-noise ratio of their AI security experiments.
Replying to @1Password
Alongside our analysis, we’re releasing two new skills: post-patch-validation to help agents test fixes, and review-walkthrough to help engineers review them. Both are now available in our skills repo. github.com/trailofbits/skill…
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Left a HN comment with more background info: news.ycombinator.com/item?id…
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Scott Arciszewski retweeted
.@trailofbits released 3 skills to help write patches: `post-patch-validation` helps agents test that fixes are correct
.@1Password's FLAWED report says AI models produce a clean security fix only 26% of the time. Defenders shouldn't take that number seriously. • The six vulnerabilities were handpicked because their fixes were complex. Clean-fix rates ran from 3% to 60% depending on the bug, and the report averaged them together. • Agents set up to fail were counted in the headline figure. Two of 1Password's prompts instructed the agent to apply the wrong fix. Those trials make up 22% of the data. One evaluation mode prevented the agent from compiling or running any code, and it accounts for 36% of the data. • The report ran two models, GPT-5.5 at medium effort and Opus 4.8 at high. Neither was tested at its highest available setting, so the report says nothing about how more effort or stronger models change the results. • Several instruction and grading errors further undercut the headline, and are elaborated upon in the attached blog. We've spent four months submitting hundreds of AI-authored patches to widely adopted open-source projects as part of Patch the Planet. Our experience didn't match 1Password's report, so we did a full analysis across 186 AI-authored pull requests and 33,500 subsequent commits, benchmarked against 2,265 human-authored patches we graded across years of security engagements. blog.trailofbits.com/2026/09…
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