Half a Second – a book about the XZ backdoor
What we can confirm so far.
What we know
The site is a book about the XZ Utils backdoor — the supply-chain compromise of the xz/liblzma project that was caught in 2024 after a maintainer noticed a roughly half-second SSH latency anomaly. The publisher's page returned HTTP 403 to our fetch, so we are not reproducing details we could not read.
Where it came from
Hacker News Front Page surfaced this on 08:48. We link the original below so you can read it directly.
Source: half-second.com — we link the original so you can verify every claim.