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Import AI (Jack Clark)·Research·6d ago·by Jack Clark·~3 min read

Import AI 457: AI stuxnet; cursed Muon optimizer; and positive alignment

Import AI 457: AI stuxnet; cursed Muon optimizer; and positive alignment

Import AI 457: AI stuxnet; cursed Muon optimizer; and positive alignment Welcome to Import AI, a newsletter about AI research. Import AI runs on arXiv, cappuccinos, and feedback from readers. If you’d like to support this, please subscribe. Stuxnet before Stuxnet: …Fast16 bugs software likely used in weapons programs… Here’s a fascinating investigation of a ~20+ year old computer virus called fast16.sys. This software is interesting because it “selectively targets high-precision calculation software, patching code in memory to tamper with results. By combining this payload with self-propagation mechanisms, the attackers aim to produce equivalent inaccurate calculations across an entire facility.” If any of you have read the Three Body Problem, this might sound familiar - in that (fictional) book, aliens intent on taking over the Earth use a technology called a Sophon to disrupt high-energy physics experiments all over the world, making it impossible for humanity to advance certain types of science. More details on the virus: When the researchers at SentinelOne did their teardown of the virus they found something quite unusual: “Most patched patterns correspond to standard x86 code used for hijacking or influencing execution flow. One injected block is different. It’s a larger and complex sequence of Floating Point Unit instructions dedicated to precision arithmetic and scaling values in internal arrays. This code is a standalone mathematical calculation function unrelated to code flow hijacking or any other typical malicious code injection.” Further investigation deepened the mystery: “We converted the patching rules into hexadecimal YARA signatures and ran them against a large, period‑appropriate corpus. The results showed a very low hit rate: fewer than ten files matched two or more patterns. Those matches, however, shared a clear theme. They were precision calculation tools in specialised domains such as civil engineering, physics and physical process simulations.” Targeted tools: “The strongest overlaps point to three high-precision engineering and simulation suites from the mid-2000s: LS-DYNA 970, PKPM, and the MOHID hydrodynamic modeling platform, all used for scenarios like crash testing, structural analysis, and environmental modeling,” they write. “LS-DYNA in particular has been cited in public reporting on Iran’s suspected violations of Section T of the JCPOA, in studies of computer modeling relevant to nuclear weapons development… by introducing small but systematic errors into physical‑world calculations, the framework could undermine or slow scientific research programs, degrade engineered systems over time or even contribute to catastrophic damage.” Why this matters - this is how a superintelligence might prevent others from coming into existence: fast16 is a subtle, hard-to-find bug which has been designed to degrade an actor’s ability to do certain types of science. You might imagine that a superintelligence could view “AI non-proliferation” as being just as important as nuclear states view “nuclear non-proliferation”. Read more: fast16 | Mystery Shadow Brokers Reference Reveals High-Precision Software Sabotage 5 Years Before Stuxnet (Sentinel LABS). *** Uh oh, the Muon optimizer kills neurons: …Maybe Aurora is finally the optimizer to beat?... Researchers with Tilde Research have done a tear-down of the Muon optimizer and found…

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