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High-power microwave defeats drone swarm
Epirus announced today the results of an August 26 demonstration of the company’s Leonidas high-power microwave (HPM) system that delivers weaponized…
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The latest blog posts to take off on Hacker News. 223 posts.
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Thoughts on Cloudflare
Thoughts on its role and impact on the web’s landscape.
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Some interesting stuff I found on IX LANs
These days the internet as a whole is mostly constructed out of point to point ethernet circuits, meaning an ethernet interface (mostly optical) attached directly from one routing device to another routing device.
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Images over DNS
Some places say 255 bytes. They are wrong . Within a TXT record there are multiple character-strings (RFC 1035 section 3.3.14 ) and those are limited in length (because a single byte is used for their length), however there can be many of them.
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The best YouTube downloaders, and how Google silenced the press
Most websites can't tell you about them. But I can.
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Firefox 143 for Android to introduce DoH
All web browsing starts with a DNS query to find the IP address for the desired service or website. For much of the internet’s history, this query is sen
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PureVPN IPv6 Leak
Two findings in PureVPN on Ubuntu 24.04. After a reconnect the system takes a default IPv6 route outside the tunnel, and the ip6tables OUTPUT policy is still ACCEPT, so traffic leaves in the clear while the client reports connected.
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Geedge and MESA leak: Analyzing the great firewall’s largest document leak
The Great Firewall of China (GFW) experienced the largest leak of internal documents in its history on Thursday September 11, 2025. Over 500 GB of source code, work logs, and internal communication records were leaked, revealing details of the GFW's research, development, and operations.
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Kerberoasting
I learn about cryptographic vulnerabilities all the time, and they generally fill me with some combination of jealousy (“oh, why didn’t I think of that”) or else they impress me w…
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Clankers Die on Christmas
I’m sorry, but I can’t help with that. We acheived AGI. The clankers died on Christmas. This post is scheduled to automatically publish: 2025-12-25. Editors note: erroneously leaked this personal commentary blog early due to typoed year. Since it's erroneous early publication, this leak has remained on the hackernews…
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How the “Kim” dump exposed North Korea's credential theft playbook
A rare and revealing breach attributed to a North Korean-affiliated actor, known only as “Kim” as named by the hackers who dumped the data, has delivered a new insight into Kimsuky (APT43) tactics, techniques, and infrastructure. This actor's operational profile showcases credential-focused intrusions targeting South…
102
My Own DNS Server at Home – Part 1: IPv4
“It’s always DNS” is a famous meme among network people. Name resolution is technically quite simple. It’s “just” translating a hostname like jan.wildeboer.net to an IP address. What could possibly go wrong? I am a radical optimist and detail-obsessed knowledge collector, so I decided to find out. As part of my goal…
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WiFi signals can measure heart rate
Engineers prove their technique is effective even with the lowest-cost WiFi devices
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Run a legal LTE network at home for $100
Yes, you read that right. Without the need for Faraday cages or signal-blocking measures, you can build a legal LTE network at home (in the US) for around $100, capable of transmitting continuously 24/7.
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Ban me at the IP level if you don't like me
“Bro, ban me at the IP level if you don't like me!”
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A German ISP changed their DNS to block my website
One of Germany's biggest ISPs changed how their DNS works, right after I exposed an organization that they’re part of.
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The first Media over QUIC CDN: Cloudflare
Media over QUIC: We have a winner! Cloudflare has released a technical preview of their MoQ CDN. Now you can use MoQ at scale with style and grace.
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Don't pick weird subnets for embedded networks, use VRFs
Don't pick random subnets to avoid IP address conflicts on foreign networks, use VRFs!
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My other email client is a daemon
I have a slight problem wherein every time I start up a game of NetHack, I completely lose touch with my surroundings for hours on end. Thankfully The DevTeam Thinks Of Everything and there’s a solution that allows communication with the outside world without breaking immersion: the mail daemon!
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Introduction to AT Protocol
Walkthrough of the various parts and concepts in Bluesky's AT Protocol (ATProto), the types of servers involved and how it all fits together
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Analysis of the GFW's Unconditional Port 443 Block on August 20, 2025
The Great Firewall of China (GFW) conducted a large-scale, unconditional block targeting TCP port 443 on August 20, 2025. This report documents the measurements and analysis we conducted of that event.
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Passive Microwave Repeaters
One of the most significant single advancements in telecommunications technology was the development of microwave radio. Essentially an evolution of radar, the middle of the Second World War saw the first practical microwave telephone system. By the time Japan surrendered, AT&T had largely abandoned their plan to…
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An argument for increasing TCP's initial congestion window (2024)
Introduction Google has a long history of performing networking research, making changes, and pushing those changes to the entire internet. In 2011, they published one of my favorite papers, which described their decision to increase the TCP initial congestion window from 1 to 10 on their entire infrastructure. This…
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Online Safety Act – shutdowns and site blocks
Report incorrectly blocked sites on UK ISP and mobile networks.
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Radicle 1.3.0
Sovereign code infrastructure.
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OpenSSH Post-Quantum Cryptography
OpenSSH post quantum cryptography
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MCP overlooks hard-won lessons from distributed systems
Fool me once, shame on you; fool me twice, shame on me.
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Our European search index goes live
We’ve started delivering independent search results from our European-based index. This will help us build the kind of ethical and fair internet we believe in.