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 LH033

LH033 checkpoint, 5 November 2026

Working record, unreviewed. Read at 14:15 UTC (Censys only, the collector's default part; HTTP 200); Censys's snapshot says it was refreshed at 13:15 UTC. Tables: data/read-2026-11-05T1415Z/tables.json. Completed days run from day 0 (21 October) to day 14 (4 November); the brief's day-30 read is due on 21 or 22 November. Written by the scheduled Thursday run.

Revisions

None: days 0 to 11 are identical, field for field, to the read of 2 November (branch shares and the unfixed-tail counts). Days 12 to 14 are new.

Censys: share of version-reporting services in each fixed branch counted as patched (observation, its classification)

Branch Day 11 Day 12 Day 13 Day 14 Services in branch, day 14
8.2 72.2% 73.0% 73.9% 73.4% 6.33 million
8.3 69.8% 70.4% 71.0% 70.4% 8.02 million
8.4 80.0% 80.5% 80.9% 81.0% 3.45 million
8.5 88.9% 89.5% 89.8% 89.7% 3.79 million

Days 12 and 13 added 0.3 to 0.9 points a day. On day 14 the shares in 8.2, 8.3 and 8.5 fell slightly, the first fall since day 8: in 8.2 and 8.5 the patched count rose but the branch count rose faster (8.2: 4.60 to 4.65 million patched of 6.23 to 6.33 million); in 8.3 the patched count itself fell by about 10 thousand (5.66 to 5.65 million) while the branch grew by 48 thousand. A rescan that adds services to a branch faster than it finds them patched lowers the share without any service being unpatched; this instrument cannot tell which. First day at half is unchanged (8.2 and 8.3 day 6; 8.4 and 8.5 day 2).

Censys: the tail no fix reaches

Day 14: 24.2 million services on branches PHP did not fix (23.9 million on day 11), 52.9 per cent of the 45.8 million that reported a version (53.3 per cent on day 11). Patched 16.5 million (15.8 on day 11); in fixed branches and not yet counted patched, 5.1 million (5.1). Services reporting no version: 74.9 million, 62.1 per cent of the 120.7 million PHP services counted (62.0 per cent on day 11).

Chart

figure.svg redrawn from this read and looked at in light and dark; the 8.2 and 8.3 end labels sit close but do not overlap. Amendment 2's S30 and L cannot be computed before days 28 to 30 are held. W3Techs is read on Mondays (row LH033-2026-11-09 names it).

From studies/LH033/checkpoints/2026-11-05.md in the repository, last changed 5 November 2026.