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The most popular blog posts about networking & internet on Hacker News. 3,019 posts.
This blog post is a response to an investigative news report about a large-scale law-enforcement attack that managed to de-anonymize a user of an old version of the long-retired app Ricochet. This blog post aims to provide insight into what we know so far. Nothing that the Tor Project has learned about this incident…
One of Germany's biggest ISPs changed how their DNS works, right after I exposed an organization that they’re part of.
It's probably old news for most, but I've recently started using Tailscale and wanted to share my experience with it.
One of my favorite books is 2013 "High Performance Browser Networking" by Ilya Grigorik. Besides a wealth of actionable advice, the book is illustrated with captivating real life stories.
Personal Blog of Christian Haschek
In collaboration with Signal, Microsoft is introducing a Private Conversations feature in Skype, powered by Signal Protocol.
By examining the limits of reasonable user behavior and embracing imperfection for users who go beyond it, we can continue to provide service that meets the expectations of users without sacrificing scalability of the system.
Cloudflare experienced a significant traffic outage on December 5, 2025, starting approximately at 8:47 UTC. The incident lasted approximately 25 minutes before resolution. We are sorry for the impact that it caused to our customers and the Internet. The incident was not caused by an attack and was due to…
Some major ISPs appear to be attempting to extort money in exchange for peering with Level3
I don’t like to cover “current events” very much, but the American government just revealed a truly bewildering policy effectively banning import of new consumer router models. This is ridiculous for many reasons, but if this does indeed come to pass it may be beneficial to learn how to “homebrew” a router…
How a Google Cloud support engineer found one customer’s missing DNS packets
Use this guide to setup Tailscale SSH. Learn how it transforms SSH connectivity by using your Tailscale identity for authentication. Enjoy simplified setup, added security with WireGuard®, and customizable access with ACLs. Ideal for managing secure connections across your tailnet.
My favorite internet service provider, init7, is rolling out faster speeds with their infrastructure upgrade. Last week, the point of presence (POP) that my apartment’s fiber connection terminates in was upgraded, so now I am enjoying a 25 Gbit/s fiber internet connection!
Google Cloud stopped the largest known DDoS attack to date, which exploited HTTP/2 stream multiplexing using the new “Rapid Reset” technique.
Part 2 in a series. (See also Part 1: The Great Dot Org Heist.) Updates: Moz letter, El Reg, registry agreement, ISOC forum + letter, Wyden Ethos Capital seems on track to complete their takeover …
Network data confirm the restriction of Twitter on multiple internet providers in Turkey as of Wednesday 8 February 2023. The incident comes as authorities raise concerns over disinformation online, although ...
A modern Android smartphone relies on a lot of services, from app stores and calendars to messaging and push notifications. Most of them have open alternativ...
Update on 2023/05/19: ASUS has publicly acknowledged the issue and provided an explanation and workaround of their own (rebooting, or a hard reset if the reboot doesn’t fix it). The original post is below:
Let's Encrypt is an amazing organisation doing an amazing thing by providing certificates at scale, for free. The problem though was that they were the only such organisation for a long time, but I'm glad to say that the ecosystem is changing. It's always a good idea
TL;DR: we have discovered XMPP (Jabber) instant messaging protocol encrypted TLS connection wiretapping (Man-in-the-Middle attack) of jabber.ru (aka xmpp.ru) service’s servers on Hetzner and Linode hosting providers in Germany. The attacker has issued several new TLS certificates using Let’s Encrypt service which were…
Spoiler: it doesn’t. But it should.
Modern email is a patchwork of protocols and extensions. Here is one article to understand them all.
We are excited to share that Balsio is the first chat app in Europe that can exchange messages with WhatsApp under the Digital Markets Act. This is a big step forward for anyone using Balsio for work.
tldr: Swing VPN is using its user base to DDOS sites using its users as a an attack botnet. Introduction It all started with a friend of mine complaining that his phone was doing a request to a specific app every few seconds. Initial assumption was that the phone was infected with a virus but a 2 minute investigation…
