Best of 2025

The blog posts Hacker News loved most in 2025. 6,220 posts.

Any topic
2643

Bloom Filters

The original motivation for the creation of Bloom filters is efficient set membership, using a probabilistic approach to significantly reduce the time and space required to reject items that are not members in a certain set.

2651

Exploring the Paramilitary Leaks

In January, Distributed Denial of Secrets published over 200 gigabytes of chat logs and recordings from paramilitary groups and militias, including American Patriots Three Percent (APIIII) and the Oath Keepers. The files were obtained by John Williams, a wilderness survival trainer who spent years deep undercover…

2664

RIP pthread_cancel

I posted about adding pthread_cancel use in curl about three weeks ago, we released this in curl 8.16.0 and it blew up right in our faces. Now, with #18540 we are ripping it out again. What happened? short recap pthreads define “Cancelation points”, a list of POSIX functions where a pthread may be cancelled. In…

2670

A story on home server security

Happy New Year! Or so I thought. After a refreshing Christmas vacation with my family, I was stashing something away in our storage room when I noticed the server fan running at maximum speed. This was very unexpected, considering my server is powered by an Intel i3 and should handle all the light tasks I run quite…