{
  "id": 11075,
  "url": "https://simonwillison.net/2026/Jul/16/bad-codex-bug",
  "title": "Quoting Thibault Sottiaux",
  "summary": "On file deletions. We’ve investigated a handful of reports where GPT-5.6 unexpectedly deleted files. What we have found is that this most commonly occurs when: Full access mode is enabled and codex is run without sandboxing protections, including without auto review being enabled The model attempts to override the $HOME env var to define a temporary directory. The model makes an honest mistake and mistakenly deletes $HOME instead. — Thibault Sottiaux , describing a pretty gnarly Codex bug ",
  "authors": null,
  "category": "org",
  "topics": "finance-investment",
  "orgs": "openai",
  "regions": null,
  "published_at": "2026-07-16T17:45:59.000Z",
  "fetched_at": "2026-07-17T05:10:53.887Z",
  "source_slug": "x-simon-willisons-weblog",
  "source_name": "Simon Willisons Weblog",
  "source_homepage": "https://simonwillison.net",
  "ethics_ai_record_url": "https://ethics.ai/record/11075",
  "original_url": "https://simonwillison.net/2026/Jul/16/bad-codex-bug",
  "evidence_status": "source-only",
  "attribution": "via ethics.ai"
}