US Government directive to suspend access to Fable 5 and Mythos 5
The US government ordered Anthropic to suspend access to Fable 5 and Mythos 5 for foreign nationals due to national security concerns, potentially related to a jailbreak vulnerability. Anthropic disputes the severity of the finding and plans to restore access.
Sshole
According to the write-up, OpenSSH sshd on musl Linux without PAM and with password authentication enabled accepts any password of 257–1024 characters for an account whose shadow password field is “*” when another account has a real password; the write-up says this has affected Alpine, OpenWrt, Buildroot and Yocto builds since 2016. According to the write-up, on Alpine’s official AWS and Azure images the affected “*” account is the default alpine user, which has passwordless doas and therefore root; it says OpenSSH 10.6p2 fixes the issue and that turning password authentication off is the mitigation if updating is not yet possible.
Astra can read and write weights to improve Qwen
In Experiment 8, Astra edited 0.016% of Qwen3.5-0.8B’s weights, with thinking on, without gradients or training and, with 50 forward passes under temperature 0.6, top-p 0.95, top-k 20 and presence penalty 1.5, the authors report MATH-500 rising from 7.9% to 48.1%. In Experiment 7, the authors report Astra could not tell from weights alone which of two Gemma 3 270M copies was sycophantic in four attempts; with only attention patterns from both models run on up to 16 texts it wrote, it chose the sycophant in all three pairs.
Show HN: I replaced a $120k bowling center system with $1,600 in ESP32s
HackerTube: YouTube built from videos recommended by HN
The author says HackerTube compiles 6,454 YouTube videos recommended by a few people on Hacker News across 150 topics from 2007–2026, drawn from 40K comments that recommend a YouTube video. The author says HackerTube has no user accounts and stores state in the local browser session. The author says an export of the site’s data is available to give to an agent to easily create your own version.
Claude Fable 5
Claude Fable 5, a Mythos-class model, offers advanced AI capabilities in areas like software engineering and scientific research. Claude Mythos 5, with safeguards lifted, is available to select partners like the US Government. Both models are priced at $10/million input tokens and $50/million output tokens.
Claude Code Is Steganographically Marking Requests
Claude Code silently inserts Unicode markers into the system prompt to detect API resellers and model abuse, altering apostrophes and date separators based on timezone and custom base URL hostname. The feature is hidden but inactive for typical users.
Show HN: An e-ink frame that hears birds and draws them as 1800s illustrations
Fugleramme is an early-development Raspberry Pi e-ink frame that uses BirdNET-Go to detect birds by sound, then displays hand-curated public-domain 1800s natural-history illustrations matched to each species, redrawing only when detections change. It runs fully locally and works without an e-ink panel.
DeepSeek just open-sourced its inference engine
DeepSeek released DeepInfer, which it describes as the open-source, high-performance inference framework powering its large-scale production services, providing offline inference for DeepSeek-V4.1-Flash on NVIDIA SM100 GPUs and Huawei Ascend 950 NPUs under the Apache License 2.0. The release states that a complete inference service also requires, but this release does not include, a KV cache system, load balancing across data-parallel replicas for both prefill and decode, and VE/prefill/decode disaggregation, for which it says most required engine functionality is already implemented.