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Internet Issues & Availability Report 2018–2019

Reading time16 min
Views1.6K
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While working on the annual report this year we have decided to avoid retelling the news headlines of the previous year and, though it is almost impossible to ignore memories absolutely, we want to share with you the result of a clear thought and a strategic view to the point where we all are going to arrive in the nearest time — the present.

Leaving introduction words behind, here are our key findings:

  • Average DDoS attack duration dropped to 2.5 hours;
  • During 2018, the capability appeared for attacks at hundreds of gigabits-per-second within a country or region, bringing us to the verge of “quantum theory of bandwidth relativity”;
  • The frequency of DDoS attacks continues to grow;
  • The continuing growth of HTTPS-enabled (SSL) attacks;
  • PC is dead: most of the legitimate traffic today comes from smartphones, which is a challenge for DDoS actors today and would be the next challenge for DDoS mitigation companies;
  • BGP finally became an attack vector, 2 years later than we expected;
  • DNS manipulation has become the most damaging attack vector;
  • Other new amplification vectors are possible, like memcached & CoAP;
  • There are no more “safe industries” that are invulnerable to cyberattacks of any kind.

In this article we have tried to cherry-pick all the most interesting parts of our report, though if you would like read the full version in English, the PDF is available.
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Submit to the Applied F# Challenge

Reading time2 min
Views893

This post was written by Lena Hall, a Senior Cloud Developer Advocate at Microsoft.


F# Software Foundation has recently announced their new initiative — Applied F# Challenge! We encourage you to participate and send your submissions about F# on Azure through the participation form.


Applied F# Challenge is a new initiative to encourage in-depth educational submissions to reveal more of the interesting, unique, and advanced applications of F#.

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How does a barcode work?

Reading time6 min
Views13K
Hi all!

Every person is using barcodes nowadays, mostly without noticing this. When we are buying the groceries in the store, their identifiers are getting from barcodes. Its also the same with goods in the warehouses, postal parcels and so on. But not so many people actually know, how it works.

What is 'inside' the barcode, and what is encoded on this image?



Lets figure it out, and also lets write our own bar decoder.
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Zen of Unit Testing

Reading time4 min
Views2.9K


Ability to write good unit tests is an important feature of any developer. But how to understand that your unit tests are correct? Good unit test is like a good chess game. In our case chessmen are the approaches which we are going to discuss in this post. There is no best chessman in a chess game because everything depends on the positions (and a player). Likewise, in unit testing you don't have to distinguish only one approach. In other words, you should use all approaches together to get the best result. So, if you want to win this game, then welcome under the cut.

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Announcing TypeScript 3.3

Reading time5 min
Views1.1K

If you’re unfamiliar with TypeScript, it’s a language that brings static type-checking to JavaScript so that you can catch issues before you even run your code – or before you even save your file. It also includes the latest JavaScript features from the ECMAScript standard on older browsers and runtimes by compiling those features into a form that they understand. But beyond type-checking and compiling your code, TypeScript also provides tooling in your favorite editor so that you can jump to the definition of any variable, find who’s using a given function, and automate refactorings and fixes to common problems.

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Making Git for Windows work in ReactOS

Reading time10 min
Views5K

Good day to you! image


My name is Stanislav and I like to write code. This is my first english article on Habr which I made due to several reasons:



This article is an english version of my very first article on russian.


Let me introduce the main figures in this story who actually fixed the bug preventing Git from running in ReactOS — the French developer Hermès Bélusca-Maïto (or just Hermes with hbelusca nickname) and of course me (with x86corez nickname).


The story begins with the following messages from the ReactOS Development IRC channel:


Jun 03 18:52:56 <hbelusca> Anybody want to work on some small problem? If so, can someone figure out why this problem https://jira.reactos.org/browse/CORE-12931 happens on ReactOS? :D
Jun 03 18:53:13 <hbelusca> That would help having a good ROS self-hosting system with git support.
Jun 03 18:53:34 <hbelusca> (the git assertion part only).
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10 Tips for Being a Good Tech Lead

Reading time7 min
Views10K
Leadership is not a service, it’s a skill. Professionals working as a software developer for a couple of years are given the chance to be a tech lead. However, remember that ‘with great power comes great responsibility.’

There are several things that you need to take care of while being a tech lead. Obviously, you don’t need to code as much as you need to do while being a software developer. However, there are several other non-coding related things that now are your responsibility to deal with.

10 Tips for Being a Good Tech Lead


Maintaining a tech lead position while not gaining any criticism from the team isn’t possible. This is not due to your incapacity albeit due to human nature. However, the effort can be made to minimize it and becoming better in what you do eventually. After all, you are the leader now.
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How to prevent targeted cyber attacks? 10 best network sandboxes

Reading time10 min
Views3.2K


Targeted attacks are the most dangerous among the multitude of modern cyber threats. They are also known as ATP (an abbreviation which stands for Advanced Persistent Threat). Those are not viruses that can accidentally get into the computer due to user's carelessness. Neither it is an attempt to replace the address of a popular site in order to cheat billing information from credulous users. Targeted cyber attacks are prepared and thought out carefully and pose a particular threat.
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Server-provided animations in iOS apps

Reading time5 min
Views2.8K


Hi everyone! About six months ago we launched one of Badoo’s most exciting features: Live Streaming. One of its main functionalities is that viewers can send gifts to their favourite streamers to express their appreciation. We wanted to make the gifts as fancy and as engaging as possible, so it was decided to make some of them really lively, and by this I mean animated. And to engage people even more, we, the Badoo team, planned to update those gifts and animations every few weeks.

As an iOS engineer, you might have already guessed the challenge we faced here: the need to add new animations and remove the old ones was going to require a fair amount of work from the client side. We’d need both the Android and the iOS development teams for every release — which, when combined with the amount of time App Store reviews and approval often take, would mean it might be days before each update could go live. But we solved the problem, and I’m going to explain to you how.

Solution overview


By this stage, we already knew how to export Adobe After Effects (AAE) animations into the format readable by our iOS app using the Lottie library. This time though, we went a bit further: we decided to create a kind of animation storage service, available via the internet. In other words, we would store all the actual animations on the server and deliver them to the client apps on demand:
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Wanna Play a Detective? Find the Bug in a Function from Midnight Commander

Reading time5 min
Views6.6K

bug

In this article, we invite you to try to find a bug in a very simple function from the GNU Midnight Commander project. Why? For no particular reason. Just for fun. Well, okay, it's a lie. We actually wanted to show you yet another bug that a human reviewer has a hard time finding and the static code analyzer PVS-Studio can catch without effort.
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PC Speaker To Eleven

Reading time12 min
Views36K
Known now as a «motherboard speaker», or just «beeper», PC Speaker has been introduced in 1981 along with the first personal IBM computer. Being a successor of the big serious computers for serious business, it has been designed to produce very basic system beeps, so it never really had a chance to shine bright as a music device in numerous entertainment programs of the emerging home market. Overshadowed by much more advanced sound chips of popular home game systems, quickly replaced with powerful sound cards, it mostly served as a fallback option, playing severely downgraded content of better sound hardware.

«System Beeps» is a music album in shape of an MS-DOS program that features original music composed for PC Speaker using the same basic old techniques like ones found in classic PC games. It follows the usual retro computing demoscene formula — take something rusty and obsolete, and push it to eleven — and attempts to reveal the long hidden potential of this humble little sound device. You can hear it in action and form an opinion on how successful this attempt was at Bandcamp, or in the video below. The following article is an in-depth overview of the original PC Speaker capabilities and making of the project, for those who would like to know more.

Open Source developer's life in GIFs

Reading time2 min
Views4.2K
Sberbank is the largest bank in Russia and Eastern Europe. Our team in Sbertech teaches Sberbank efficient work with Free & Open Source Software. You can read more about this on Habr (what we exactly do, yet in Russian).

One of the main challenges is to open the mind of managers and engineers for using FOSS (Free & Open Source Software) properly. Because we have a lot of them, we have tried to use GIFs for answer the most common questions.

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Generic Methods in Rust: How Exonum Shifted from Iron to Actix-web

Reading time13 min
Views6K
The Rust ecosystem is still growing. As a result, new libraries with improved functionality are frequently released into the developer community, while older libraries become obsolete. When we initially designed Exonum, we used the Iron web-framework. In this article, we describe how we ported the Exonum framework to actix-web using generic programming.

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Announcing F# 4.6 Preview

Reading time10 min
Views1.6K

We’re excited to announce that Visual Studio 2019 will ship a new version of F# when it releases: F# 4.6!


F# 4.6 is a smaller update to the F# language, making it a “true” point-release. As with previous versions of F#, F# 4.6 was developed entirely via an open RFC (requests for comments) process. The F# community has offered very detailed feedback in discussions for this version of the language. You can view all RFCs that correspond with this release here:



This post will detail the feature set and how to get started.

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