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Context After needing to setup my dev environment on a few different machines/servers, I decided to document it. Eventually, I’ll make it into an Ansible playbook. I use Digital Ocean droplets. The initial setup is done by following this tutorial: Initial Server Setup with Ubuntu 16.04 The Pieces ¶ pyenv pyenv-virtualenv pyenv-virtualenvwrapper Prep ¶ In order to get pyenv running, we need the following libraries: ..

Over 50% of cyber attacks are executed through malware, whose job is to find a flaw to inject other types of viruses including malware, adware and much more. Knowing the computer remotely, it can spy on the screen and even crypt the files: a wrong click and you lose anything. -Continue to read the article on SerHack.me

Looking for ways to visualize machine learning processes. Neural nets are trained to recognized cancerous Ki-67 marked cells in biopsies. Instead of just counting the cells, a neural style process is run to produce infinite zombies in their place.

I was doing some research for an upcoming exhibition and looked into the question of tone in scientific communication, specifically the stylistic influence of visual representations of knowledge. Obviously the style changed over time, became more abstract, less naturalistic, less.. certain. As if the scientists became troubled by the idea of adding some character to the visual language - which is futile anyway: no matter what you do you e....

The Snyk Security team is today announcing the public disclosure of a critical arbitrary file overwrite vulnerability called Zip Slip. It is a widespread vulnerability which typically results in remote command execution. The vulnerability affects thousands of projects.


On the Rating of Media - xavd.id - 8 years ago - eng
Learn more about how I rank all of the media I track in a consistent manner Read the whole thing .

On the Rating of Media - xavd.id - 8 years ago - eng
Learn more about how I rank all of the media I track in a consistent manner Read the whole thing .

Once a quarter SalesLoft sets aside a few of days for the product and engineering teams to work on whatever they want.


Today GitHub was officially acquired by Microsoft. Many of the internet’s citizens are noticeably freaked out about this. I believe this is unnecessary and will attempt to explain why in this essay.

Acoustic Cryptanalysis “Acoustic cryptanalysis is a type of side channel attack that exploits sounds emitted by computers or other devices” Wavecatcher is a simple PCB that makes use of a MEMS ultrasound microphone, in order to capture audio to around 80kHz, with the goalof finding interesting ultrasound sources and playing with exfiltrating data from SMPSs […]

Acoustic Cryptanalysis “Acoustic cryptanalysis is a type of side channel attack that exploits sounds emitted by computers or other devices” Wavecatcher is a simple PCB that makes use of a MEMS ultrasound microphone, in order to capture audio to around 80kHz, with the goalof finding interesting ultrasound sources and playing with exfiltrating data from SMPSs […]

Acoustic Cryptanalysis “Acoustic cryptanalysis is a type of side channel attack that exploits sounds emitted by computers or other devices” Wavecatcher is a simple PCB that makes use of a MEMS ultrasound microphone, in order to capture audio to around 80kHz, with the goalof finding interesting ultrasound sources and playing with exfiltrating data from SMPSs […]

Acoustic Cryptanalysis “Acoustic cryptanalysis is a type of side channel attack that exploits sounds emitted by computers or other devices” Wavecatcher is a simple PCB that makes use of a MEMS ultrasound microphone, in order to capture audio to around 80kHz, with the goalof finding interesting ultrasound sources and playing with exfiltrating data from SMPSs […]

We now have a government in Italy. Everyone around me is talking about this, so I figured out I might as well try to analyse what are the biggest problems the country is facing. Here is a list of existential problems we face: Labor Market laws make it almost impossible or extremely costly to hire/fire anyone. Organised Crime, Tax evasion, Corruption and waste of public money plague the country. The juidicial system is extrem..

I always see the same sites used and quotes for free stuff (unsplash, pexels, freepics, etc.) and that’s cool because these are awesome resources anyways, but today I just wanted to feature 3 places I recently discovered and I haven’t seen quoted or talked about in many places. Resource Cards Growing list of free resources aimed to help creatives with their projects. By Stelianand Sergiu Firez  Web: https://resourcecards.com/.

I always see the same sites used and quotes for free stuff (unsplash, pexels, freepics, etc.) and that’s cool because these are awesome resources anyways, but today I just wanted to feature 3 places I recently discovered and I haven’t seen quoted or talked about in many places. Resource Cards Growing list of free resources aimed to help creatives with their projects. By Stelianand Sergiu Firez  Web: https://resourcecards.com/.

Getting server-side rendering to work in React is quite a hassle if you don't know what you're doing. Let's make it easier.

We go through uses of the Python reduce function, when it's useful and its performance benefits. This time, we spend some time exploring function composition, and how to manage large function chains, e.g. in a data processing pipeline.

Code and Data - johnj.com - 8 years ago - eng
Introduction This article was adapted from discussions we had at the weekly Clojure study group at OpinionLab, in June, 2018. Clojure is a Lisp. Code is data in Lisp, and data can also be code. Lisp code consists of lists of symbols (or atoms, as they are called in other Lisps), other data primitives such as numbers and keywords, or (nested) lists of the same. 1 The first item in an expression (list) is the name of an opera....

Code and Data - johnj.com - 8 years ago - eng
Introduction This article was adapted from discussions we had at the weekly Clojure study group at OpinionLab, in June, 2018. Clojure is a Lisp. Code is data in Lisp, and data can also be code. Lisp code consists of lists of symbols (or atoms, as they are called in other Lisps), other data primitives such as numbers and keywords, or (nested) lists of the same. 1 The first item in an expression (list) is the name of an opera....

For the month of May, I only read one book, which seems to be the trend for the year. While I did read three books in January , I only managed to read one book in March and one book in April .

Code and Data - johnj.com - 8 years ago - eng
Introduction This article was adapted from discussions we had at the weekly Clojure study group at OpinionLab, in June, 2018. Clojure is a Lisp. Code is data in Lisp, and data can also be code. Lisp code consists of lists of symbols (or atoms, as they are called in other Lisps), other data primitives such as numbers and keywords, or (nested) lists of the same. 1 The first item in an expression (list) is the name of an opera....

Ok, let’s chill for a sec. If you don’t know about Jo Luijten, he is a Dutch video artist & video game developer based in LA, and beside his impressive portfolio, he also feed a youtube channel name Squirrel Monkeywith some funny retro videos. I stumbled upon his creations the other day and had to share some here. Check his channel if you want more vids (got on Siri, Tinder, Insta, Bitcoin and more).

Ok, let’s chill for a sec. If you don’t know about Jo Luijten, he is a Dutch video artist & video game developer based in LA, and beside his impressive portfolio, he also feed a youtube channel name Squirrel Monkeywith some funny retro videos. I stumbled upon his creations the other day and had to share some here. Check his channel if you want more vids (got on Siri, Tinder, Insta, Bitcoin and more).

Here we are, item numero dos in our three-part mini-series about my recent (and highly suspect) purchases. Without further ado, here we go. For some reason I’m not sure I understand yet, I bought a car. As Fate Would Have It I didn’t just wake up one day (after living here for three years) and decide I wanted a car. No, I bought it on a whim when the opportunity presented itself. A co-worker was selling their car, and it j..

Here we are, item numero dos in our three-part mini-series about my recent (and highly suspect) purchases. Without further ado, here we go. For some reason I’m not sure I understand yet, I bought a car. As Fate Would Have It I didn’t just wake up one day (after living here for three years) and decide I wanted a car. No, I bought it on a whim when the opportunity presented itself. A co-worker was selling their car, and it j..

I’m generally not against spending money. I am however generally against buying things . This is a point I’ve surely beaten well beyond death by now, so I won’t belabor it much further. It’s just to say that I want to be really sure something makes sense within the larger context of my life before I buy it and have to deal with it forever. I only mention this because I’ve been on a bit of a purchasing spree (by my standards) as of late..

I’m generally not against spending money. I am however generally against buying things . This is a point I’ve surely beaten well beyond death by now, so I won’t belabor it much further. It’s just to say that I want to be really sure something makes sense within the larger context of my life before I buy it and have to deal with it forever. I only mention this because I’ve been on a bit of a purchasing spree (by my standards) as of late..


I like to keep my GitHub clean. I delete forks I’m not using anymore, move old abandoned repositories to my graveyard and etc.



Neverneverland, Frans de Wollantstraat 70, Amsterdam duo show with Delano Paul Mac Andrew (NL) titled under control Thanks to Judith Leysner for the invitation.

In this post I describe an alternative approach to sharing source code elements between multiple build targets. It's based on a custom build process I implemented at PathEngine for our C and C++ code-base (but the core ideas could also be relevant to other languages with compilation to object files). We'll need to enforce some constraints on the way the source code is set up, notably with regards to header file organisation, but can the....

Expect more items to be added in the future. Introduction tl;dr My dream programming language should be easy like a scripting language and fast and raw like low-level languages. It should be no secret, among people who know me even a little bit, that I like to work on programming languages. Why? I don’t know. I just do. But I have been feeling uncomfortable as of late because it seems like all of the good ideas are already t..

Expect more items to be added in the future. Introduction tl;dr My dream programming language should be easy like a scripting language and fast and raw like low-level languages. It should be no secret, among people who know me even a little bit, that I like to work on programming languages. Why? I don’t know. I just do. But I have been feeling uncomfortable as of late because it seems like all of the good ideas are already t..

Expect more items to be added in the future. Introduction tl;dr My dream programming language should be easy like a scripting language and fast and raw like low-level languages. It should be no secret, among people who know me even a little bit, that I like to work on programming languages. Why? I don’t know. I just do. But I have been feeling uncomfortable as of late because it seems like all of the good ideas are already t..

Expect more items to be added in the future. Introduction tl;dr My dream programming language should be easy like a scripting language and fast and raw like low-level languages. It should be no secret, among people who know me even a little bit, that I like to work on programming languages. Why? I don’t know. I just do. But I have been feeling uncomfortable as of late because it seems like all of the good ideas are already t..

Expect more items to be added in the future. Introduction tl;dr My dream programming language should be easy like a scripting language and fast and raw like low-level languages. It should be no secret, among people who know me even a little bit, that I like to work on programming languages. Why? I don’t know. I just do. But I have been feeling uncomfortable as of late because it seems like all of the good ideas are already t..

Expect more items to be added in the future. Introduction tl;dr My dream programming language should be easy like a scripting language and fast and raw like low-level languages. It should be no secret, among people who know me even a little bit, that I like to work on programming languages. Why? I don’t know. I just do. But I have been feeling uncomfortable as of late because it seems like all of the good ideas are already t..

Ok…. title of this post is a tad specific but I have wasted so much time trying to piece all together all the elements of this short post that I thought it will be probably useful for a few other people out there.  so what are we talking about anyway. On one side of the ring we have Nextcloud– the evolution of owncloud, forked by its own founder to ensure this project remain opensource forever (full story here).

Ok…. title of this post is a tad specific but I have wasted so much time trying to piece all together all the elements of this short post that I thought it will be probably useful for a few other people out there.  so what are we talking about anyway. On one side of the ring we have Nextcloud– the evolution of owncloud, forked by its own founder to ensure this project remain opensource forever (full story here).

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