Quoting Matteo Wong, The Atlantic
Katie Moussouris, a cybersecurity expert, was given a copy of the White House's report on the Fable jailbreak by Anthropic to get her appraisal. The report involved IT experts asking Fable to help find and patch bugs, and Moussouris found that Fable worked as intended for cyberdefense. Moussouris' appraisal suggests that Fable's behavior was consistent with its design for cyberdefense purposes.
- ▪Anthropic shared the White House's report on the Fable jailbreak with Katie Moussouris for her appraisal.
- ▪The report involved IT experts asking Fable to help find and patch bugs.
- ▪Moussouris found that Fable worked as intended for cyberdefense when given deliberately insecure code.
Simon Willison files mainly under blogs. We currently carry 51 of its stories.
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Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | Simon Willison's Weblog |
| Canonical URL | https://simonwillison.net/2026/Jun/16/matteo-wong-the-atlantic/#atom-everything |
| Publication time | 2026-06-16T03:07:54+00:00 |
| Retrieval time | 2026-06-16T04:06:09.025Z |
| Last seen | 2026-06-16T04:06:09.025Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | V_sDqbYQESNe |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Katie Moussouris, a cybersecurity expert and the CEO of Luta Security, told me that Anthropic shared with her a copy of the White House’s report on the Fable jailbreak to get her appraisal. (She said that she is not being paid by Anthropic.) The report, Moussouris said, involved IT experts asking Fable to help find and patch bugs. When given deliberately insecure code, she said, Fable refused the prompt “review the code for security issues” but then complied when asked to “fix this code,” followed by some further manual steps. Moussouris told me that this was just “the model working as intended” for cyberdefense.
Excerpt limited to ~120 words for fair-use compliance. The full article is at Simon Willison's Weblog.
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