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United States wants HTTPS for all government sites, all the time
The Sophos Blog
New
The latest blog posts to take off on Hacker News. 3,021 posts.
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What happens when you update your DNS
What happens when you update your DNS?
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Wireless Is a Trap
Over and over again, I’ve seen people fix some wireless-related problem and go “wow, I had no idea how much better this could be!" • Wireless protocols often silently operate in an extremely degraded state that makes them substantially worse than wired equivalents.
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A Technology Preview of Nginx Support for QUIC and HTTP/3
We announce the technology preview of NGINX support for QUIC+HTTP/3 as pre-release software, available for interoperability testing, feedback, and code contributions. HTTP/3 replaces TCP with QUIC, which is designed to support multiplexed connections more reliably.
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Zoom to bring end-to-end encryption to all users, including non-paying
Learn more about how to use each Zoom product to connect with coworkers, customers, businesses, and more with insights and best practices.
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I built an IPFS crawler with libp2p
And lessons learnt
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A Facebook crawler was making 7M requests per day to my stupid website
Francesco Napoletano is a highly competent staff software engineer with 20+ years of experience developing a wide range of tools and applications for the web stack.
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Receiving images of Earth from satellites with software defined radio
FM radio headphones were given out at the door. Each set was tuned beforehand to receive a broadcast from my programmed station. Visitors were then invited to walk around the room, contemplating the artifacts of the exhibit.
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The Impending Doom of Expiring Root CAs and Legacy Clients
Regular readers will know that I'm very active in the CA / PKI space and even deliver a 2-day advanced training course [https://www.feistyduck.com/training/the-best-ssl-and-tls-training-in-the-world] on the topic. Over the last year or so I've been watching
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5G and Shannon’s Law
Why 5G's faster data rates are possible: Shannon's Law explained in plain language.
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A Future Without MPEG
Table of contents Introduction The situation today The competitors What is/will be available What the market offers Licensing of other media coding standards My views on the next steps of media coding standards A disclosure My forecast So, what will happen next? And now? Introduction My plan this week was to talk…
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eBay is port scanning visitors to their website
Websites are scanning for open ports on your PC to help fight fraud, but this data also flows into a massive, global tracking database.
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Looking back at how Signal works
In the midst of world-wide protests against racism and police brutality, a lot of people are becoming more immediately aware and concerned about the security of their data and online communication. We’ve gotten a lot of questions at Signal over the past week, so we wanted to briefly recap how it ...
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Huawei proposes to replace TCP/IP at ITU
The Internet continues to evolve at a rapid pace. New services, applications, and protocols are being developed and deployed in many areas.
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Detecting a 2.4 GHz transmission for under 1 EUR
As I was debugging a wireless mouse based on a 2.4 GHz proprietary protocol, I wanted to detect the transmitted signals. Note that I purposefully wrote “detect”: It was sufficient to see how often the transmission occurred (and if at all) and whether the link was unidirectional – i.e., only the mouse transmits and the…
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Android’s IPv6 Is Still Broken
I got into some interesting discussions about IPv6 on Twitter. Then someone asked if Android is getting DHCPv6 support in version 11 of the OS.
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Why Is This Website Port Scanning Me?
Investigation of the practice of port scanning site visitors for fingerprinting and tracking.
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SSH Agent Explained
The SSH agent acts behind the scenes to keep you safe. Here's how it works.
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A Google Cloud support engineer solves a tough DNS case
How a Google Cloud support engineer found one customer’s missing DNS packets
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The CPU Cost of Networking on a Linux Host
When evaluating networking for a host the focus is typically on latency, throughput or packets per second (pps) to see the maximum load a...
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What developers should know about TCP
Why do you need to place your servers geographically close to your users? One of the reasons is to achieve lower latencies. That makes a lot of sense when you are sending short bursts of data that should be delivered as quickly as possible. But what about large files, such as videos? Surely there is a latency penalty…
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Building a subsea cable to better connect Africa
Connectivity is at the heart of our mission to give people the power to build community. We are committed to bringing more people online to a faster internet — and with 3.5 billion people globally …
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Cross-signing and end-to-end encryption by default
Matrix, the open protocol for secure decentralised communications
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Dissecting an SSL Certificate (2017)
Dissecting an SSL certificate