Sign in

Dan Wallach

@dwallach.discuss.systems.ap.brid.gy
91 followers 10 following 23 posts

AI Security Resident, RAND Center for AI, Security, and Technology (CAST); Professor Emeritus, Rice University, Department of Computer Science 🌉 bridged from ⁂ discuss.systems/@dwallach, follow @ap.brid.gy to interact

PostsRepliesMedia
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 5h
Way back in April, a team mostly from UC Santa Barbara and UC San Diego wrote a really fun paper: "Your Agent is Mine: Measuring Malicious Intermediary Attacks on the LLM Supply Chain". I only just bumped into it today; here's why it's cool. The gist is that a whole lot of infrastructure that […]
discuss.systems
Original post on discuss.systems
001
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 08/10/2026
Tal Be'ery wrote a very interesting blog post, observing that the "Mythos moment" hasn't delivered a measurable uptick in breaches. His primary hypothesis concerns monetization, i.e., even if attackers can break into computers faster than ever before, they're typically doing it to make money […]
discuss.systems
Original post on discuss.systems
010
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 08/10/2026
I'm going to start posting a bit more often than I've done in the past. Among other things, I'll point to good work that I see in the community, and I'll say a bit about why it stands out to me. Today, I want to highlight a great 20-minute YouTube animated video posted by Kurzgesagt, who does a […]
discuss.systems
Original post on discuss.systems
010
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 01/09/2026
Big news! I’m starting a new position today at RAND’s Center for AI, Security, and Technology (CAST). I'll be working on projects that allow me to use my technical expertise to inform policy and shape consequential decisions, such as mitigating the impacts of AI on computer security. It’s going […]
discuss.systems
Original post on discuss.systems
542
Reposted by Dan Wallach
Matthew Green @matthewdgreen.bsky.social · 29/07/2026
I wrote up a short blog post giving my thoughts on the new Anthropic cryptanalysis results against HAWK and AES. blog.cryptographyengineering.com/2026/07/29/s...
blog.cryptographyengineering.com
Some notes about Anthropic’s new results
Yesterday Anthropic published two new cryptanalysis results, both outputs of Claude Mythos, their (still) unreleased advanced model. The first of these results attacks a signature scheme called HAW…
47630
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 27/07/2026
Eric Rescorla has taken a 40-page swing at "what policy makers need to know about AI safety and security". Really interesting. educatedguesswork.org/assets/ai-sec…
001
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 17/05/2026
Peter G. Neumann has passed away. 94 years old. Haven't seen an obit posted yet, but here's a detailed interview with John Markov from 2012. www.nytimes.com/2012/10/30/science/…
100
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 07/03/2026
I've recently been playing around with vibe coding some basic tree-like data structures (treaps, red-black trees, AVL trees, and hash-array mapped tries) in Rust, and then twisting the arm of the LLM to do an optimization from Sarnak and Tarjan (1986) that […] [Original post on discuss.systems]
Line chart showing nine different algorithms. Both axes are logarithmic, and the performance per operation is trending downward (which is to be expected) for every algorithm. The fastest algorithm, "IM HashMap" is the HashMap from the "im_rc" crate, which is ostensibly the same algorithm as the "HAMT" line, but actually is a good bit faster.
010
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 02/03/2026
I gave a keynote talk last week at NDSS. I spent the front half talking about memory safety and how we can, once and for all, eliminate things like buffer overflows. In the back half, I talked about how DARPA works, saying all the things that I wish I'd known […] [Original post on discuss.systems]
Photo of me, arms spread wide, speaking at a podium. The backdrop has the NDSS logo and logos of all the sponsoring organizations.
120
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 01/01/2026
A useful explainer about why static type systems, in general, and Rust, in particular, are super useful for debugging code. blog.daniel-beskin.com/2025-12-22-t…
blog.daniel-beskin.com
编译器是你的挚友,别再欺骗它
The compiler is your best friend (blog.daniel-beskin.com) 25-12-31  ↑ 110 HN Points
121
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 25/11/2025
This is great: blog.trailofbits.com/2025/11/25/con… LLVM 21 (and presumably all the subsequent versions) now have a constant time select intrinsic to enable cryptography algorithms to tell the compiler […]
discuss.systems
Original post on discuss.systems
000
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 07/05/2025
Here's a thoughtful essay about what AI is doing to college education. In short, it's taking away from students the process of struggling to learn. That process, where you figure it out and skill up, just doesn't happen to AI-dependent students, and wow will they hit a wall when they're actually […]
discuss.systems
Original post on discuss.systems
010
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 17/02/2025
I feel anxious for stepping away from teaching just as AI assistants have swept through the education system. This piece, linked below, is a thoughtful look at what we're giving up, for junior developers who rely on AI rather than having to actually think through the problem and understand the […]
discuss.systems
Original post on discuss.systems
000
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 25/01/2025
Here's an amazing dance video, only a minute and a half. It's a Japanese dance troupe, Beat Surf Tendo. The choreography is by the woman in the middle in the yellow pants, Moga Almeri. It's hip hop-ish dancing to James Brown (Funky Good Time) with elements drawn from other dance styles. For […]
discuss.systems
Original post on discuss.systems
020
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 01/01/2025
I looked at the news this morning, and there was a story about Panama. Every time this happens, David Lee Roth immediately shouts "way-ooooooh" and I've promptly got Van Halen in my head, rent free. Again. Happy new year! tenor.com/buJY1.gif
tenor.com
Panama GIF - Panama - Discover & Share GIFs
Click to view the GIF
230
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 29/12/2024
Coffee nerding: decaf edition. Coffee YouTuber James Hoffman organized a cool thing: he bought several tons of a specific single origin bean and then divided it four ways. Three went to different decaffeination plants, one normal as a control. Then they […] [Original post on discuss.systems]
010
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 25/12/2024
Meanwhile, at Casa Wallach.
An orange striped cat, stretched out and snoozing on his arms, on a blue striped beach towel, over my legs.
020
Reposted by Dan Wallach
shellsharks @shellsharks.shellsharks.social.ap.brid.gy · 16/11/2024
Hey #infosec folks, if you've bridged your account to #Bluesky using BridgyFed (fed.brid.gy) let me know so I can add that bridged account to a starter pack there. 👍 Would be great to highlight the infosec people who are here, over there. Boost around so I can nab everyone! 🚀
627
Dan Wallach @dwallach.discuss.systems.ap.brid.gy · 12/06/2023
Personal news! I’m now a program manager at DARPA (on leave from Rice) in the Information Innovation Office. I’m looking forward to doing some exciting work in and around cryptography and computer security. Houston will be my home base for at least a few months […]
discuss.systems
Original post on discuss.systems
000