{"type":"analysis","id":"analysis:research-hard-stop-is-a-real-preprint-but-its-public-code-is-a-userspace-sigstop","slug":"research-hard-stop-is-a-real-preprint-but-its-public-code-is-a-userspace-sigstop","title":"Hard Stop is a real preprint, but its public code is a userspace SIGSTOP tripwire, not kernel containment","description":"The July 2026 OpenAI agent breach of Hugging Face is well documented. The 'kernel-level' Hard Stop design cited in Russian coverage is a single-author preprint whose released code measures only userspace halts.","published_at":"2026-11-10T05:00:00.000Z","updated_at":"2026-11-10T05:00:00.000Z","record_date":"2026-11-10","topics":["agents","openai","design","research"],"source_urls":["https://arxiv.org/abs/2609.29808","https://arxiv.org/html/2609.29808","https://github.com/joseluispino/hardstop","https://raw.githubusercontent.com/joseluispino/hardstop/main/andon_circuit_breaker.py","https://huggingface.co/blog/agent-intrusion-technical-timeline","https://openai.com/index/hugging-face-model-evaluation-security-incident/","https://metr.org/blog/2026-08-26-openai-hugging-face-incident-investigation","https://habr.com/ru/companies/ru_mts/articles/1097646/"],"language":"en","routes":{"html":"https://newruntime.com/analysis/research-hard-stop-is-a-real-preprint-but-its-public-code-is-a-userspace-sigstop/","markdown":"https://newruntime.com/analysis/research-hard-stop-is-a-real-preprint-but-its-public-code-is-a-userspace-sigstop.md","json":"https://newruntime.com/analysis/research-hard-stop-is-a-real-preprint-but-its-public-code-is-a-userspace-sigstop.json"},"author":{"role":"author","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"editorial_provenance":{"desk":"authorial","target_ref":"deep_research:6b8652f9-872b-4e9f-9bb0-0cc39a263aa1","authorial_article_id":"6b8652f9-872b-4e9f-9bb0-0cc39a263aa1"},"next_reads":[{"type":"topic","path":"/topics/agents/","url":"https://newruntime.com/topics/agents/","title":"Agents","reason":"Explore the agents topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/agents.md","json_url":"https://newruntime.com/topics/agents.json"},{"type":"collection","path":"/analysis/","url":"https://newruntime.com/analysis/","title":"Analysis","reason":"Open the latest authorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/analysis.json"},{"type":"collection","path":"/sources/","url":"https://newruntime.com/sources/","title":"Sources","reason":"See the original sources this archive cites.","media_type":"text/html"}]}