eBPF, Sockets, Hop Distance and manually writing eBPF assembly

A friend gave me an interesting task: extract IP TTL values from TCP connections established by a userspace program. This seemingly simple task quickly exploded into an epic Linux system programming hack. The result code is grossly over engineered, but boy, did we learn plenty…

Everyone can now run JavaScript on Cloudflare with Workers

Exactly one year ago today, Cloudflare gave me a mission: Make it so people can run code on Cloudflare’s edge. At the time, we didn’t yet know what that would mean. Would it be container-based? A new Turing-incomplete domain-specific language? Lua? “Functions”? There were lots…

“State is the main regulator of our activity” – says Hydra admin

Chief admin and creator of the leading Russian darknet market Hydra gave an interview to Zefir (Crypto and technology news website). We translated it to make the text available to English speakers. Do you remember when you used Tor browser for the first time? How…