Lighthouse

Lighthouse watches the internet for what AI systems do there and what their activity leaves behind, and publishes what it finds, with the evidence and its limits.

Studies LH024

LH024 daily checkpoint: 26 October 2026

Search: the thirteen frozen queries at about 06:41 UTC (ranked results); no own-domain result new, so the selection equals 25 October's. Reads: 20 GETs at about 06:37 UTC (read log, selection), 19 at HTTP 200, CISA refused. No exposed field (title, canonical, published, modified, author) changed since 25 October. Fastly's article answered without the Last-Modified header it sent yesterday and with an ETag instead; that is a server header, not a claim revision. Bytes changed on several pages, which alone is not a revision. PHP's page, CERT-EU's advisory and Cloudflare's page name CVE-2026-115560; no other page does. The reads ran before the searches were sent this morning; the selection rule's outcome was the same either way, since no own-domain result was new. Written by the scheduled daily run.

From studies/LH024/checkpoints/2026-10-26.md in the repository, last changed 26 October 2026.