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DNS: Basic Concepts (2013)
Dig through the DNS and learn how and why it all works.
New
The latest blog posts to take off on Hacker News. 2,307 posts.
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Mistakes Beginners Make When Working with Databases
When you start out as a developer there’s an overwhelming amount of things to grasp. First there’s the language itself, then all the quirks of the specific framework you’re using,and after that (or maybe before) we’ll throw front-end development into the mix, and somewhere along the line you have to decide to store…
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Typosquatting programming language package managers
Edit: It seems that the blog post and the thesis caused quite some interest. Please contact me under the following mail address: admin [|[at]|] incolumitas [[|dot|]] com In this blog post, it is demonstrated how 17000 computers were forced to execute arbitrary code by typosquatting programming language…
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Wired Documentary on Shenzhen
This shoot was a lot of fun, and it was a great pleasure working with Posy and Jim. I think their talent as producer and director really show through. They also did a great job editing my off-the-cuff narratives. The spot in the video where I’m pointing out Samsung parts isn’t matched to the b-roll of Apple parts, but…
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Mentoring in Gaza's first hackathon
Engineer
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Do Evil with ESP8266: Slow Down the WiFi
While hackers do good most of the time, we occasionally do evil and play a prank. The ESP8266, unlike JSON , allows me to do evil. Thus, I programmed the microcontroller for an evil purpose: slow down the WiFi.
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Scalability, but at what cost? (2015)
Michael Isard, Derek Murray, and I recently sent in a HotOS submission (it’s not blind, so no harm talking about it, we think). The subject is hinted at from...
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Obscurity Is a Valid Security Layer
Good Obscurity vs. Bad Obscurity Camouflage OPSEC An SSH Example Reducing Impact or Probability Summary Many of us are familiar with a concept know as Security
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Distributed Systems Testing: The Lost World
After failing to find good papers about distributed systems testing for many months, yesterday I asked a question in Twitter:
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The Art of Closing
How to close patches for your open source project you don't want.
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Understanding the Elm type system
Articles about bootstrapping a business in tech and web development by Adam Waselnuk. I’m a first-time founder who is bootstrapping a software business. Follow along as I learn!
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Introduction to Metaprogramming in Nim
Metaprogramming is the writing of computer programs with the ability to treat programs as their data. It means that a program could be designed to read, generate, analyse and/or transform other programs, and even modify itself while running.
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The tyranny of the Hollerith punched card
Wherein the author discusses (another) accident of history.
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Safe VSP – 30 year old Commodore 64 bug demystified (2013)
I contributed this one-filer to the C64 Demo compo at Datastorm 2013 . It ended up on 7th place, which I consider quite good for a technical proof of concept.
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Nick Farr's 30c3 Jake Appelbaum story of abuse and harassment
Hi. I’m Nick Farr. (@nickf4rr) You can read what you probably came here for at archive.org But if you’ll allow me first: Bringing people together is my life’s work. The text that was originally …
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To approximate 52! by hand, compute 54! and divide by 3000
Some time ago I gave a talk in which I showed that something unexpected happened with a deck of playing cards. I had some volunteers try it, and while they did so I talked about just how many orderings there are for 52 cards. I computed (an approximation to) $52!$ (52 factorial) by hand. It's not so hard - you just…
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DB-19: Resurrecting an Obsolete Connector
Oh man, this is good! You’re looking at the first DB-19 connector to be made in the 21st century:
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Prime After Prime
Are the prime numbers sprinkled randomly along the number line, like windblown seeds? Of course not: Primality is not a matter of chance but a product of simple arithmetic. A number is prime if and only if no smaller positive integer other than 1 divides it evenly.
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Your human-size life
In the early years of this blog I wrote a lot about the personal struggles of people who had attained financial independence only to find out that it revealed that money was not what was standing in the way of happiness. That's contrary to the message of our society, which is this:Until you're rich, you're…
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Undocumented Facebook API to identify friends in photos
So last week I was casually browsing through Facebook feed and looking at some random photo posted by a friend. So hovering over the pictur...
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A tool for thought
As ClojureScript nears its fifth birthday I find myself reflecting on its suitability as a “tool for thought” . Certainly reading the Structure and Interpretation of Computer Programs nearly thirteen years ago painted an ideal image of Lisp as a truly interactive and tangible approach to computing. That experience…