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Ubuntu ceases to provide packages for 32-bit x86 architecture

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Two years after the cessation of the formation of 32-bit installation images for the x86 architecture, the developers of Ubuntu have decided to fully end the lifecycle of this architecture in the distribution. Starting with the autumn release of Ubuntu 19.10, packages in the repository for the i386 architecture will no longer be created. The last LTS branch for users of 32-bit x86 systems will be Ubuntu 18.04, the support for which will last […]

DragonFly BSD 5.6.0

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On June 17, 2019, a significant release of the DragonFly BSD operating system was presented – Release 56. This release brings substantial improvements to the Virtual Memory System, updates for Radeon and TTM, as well as performance enhancements for HAMMER2. DragonFly was formed in 2003 as a fork of FreeBSD version 4. Among its many features, the following stand out: A high-performance file system HAMMER2 […]

Cloudflare has introduced a distributed random number generator

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Cloudflare has launched the League of Entropy service, which is supported by a consortium of several organizations interested in providing high-quality random numbers. Unlike existing centralized systems, the League of Entropy does not rely on a single source and uses entropy generated from multiple unrelated generators managed by different project participants to generate random sequences. […]

Cable television networks for the very young. Part 9: Head Station

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The head station collects signals from multiple sources, processes them, and broadcasts them into the cable network. Content of the series of articles Part 1: General architecture of the cable TV network Part 2: Composition and form of the signal Part 3: Analog component of the signal Part 4: Digital component of the signal Part 5: Coaxial distribution network Part 6: RF signal amplifiers Part 7: Optical receivers Part 8: Optical […]

How to Solve NP-Hard Problems Using Parameterized Algorithms

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Research work is perhaps the most interesting part of our studies. The idea is to try out your chosen direction while still at university. For instance, students from Software Engineering and Machine Learning often pursue research projects in companies (mostly JetBrains or Yandex, but not only). In this post, I will talk about my project in the field of Computer Science. […]

TCP SACK Panic — Kernel vulnerabilities leading to remote denial of service

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Netflix employees discovered three vulnerabilities in the TCP network stack code. The most serious vulnerability allows a remote attacker to trigger a kernel panic. Several CVE identifiers were attached to these issues: CVE-2019-11477 is classified as a significant vulnerability, while CVE-2019-11478 and CVE-2019-11479 are deemed moderate. The first two vulnerabilities relate to SACK (Selective Acknowledgment) and MSS (Maximum […]

Flash will be disabled by default in Firefox 69.

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Mozilla developers have disabled the playback of Flash content by default in the nightly builds of Firefox. Starting with Firefox 69, scheduled for September 3, the settings for the Adobe Flash Player plugin will remove the option to enable Flash permanently, leaving only the ability to disable Flash and to individually enable it for specific sites (activation with an explicit click) without remembering the selected mode. In the ESR branches of Firefox […]

Release of the DragonFly BSD 5.6 operating system

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The release of DragonFlyBSD 5.6 is now available, an operating system with a hybrid kernel, created in 2003 for the alternative development of the FreeBSD 4.x branch. Key features of DragonFly BSD include the HAMMER distributed versioned filesystem, support for loading 'virtual' kernels as user processes, caching data and metadata from the filesystem on SSDs, context-aware variant symbolic links, and the ability to freeze processes […]

Vulnerabilities in the TCP stacks of Linux and FreeBSD leading to remote denial of service.

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Netflix has identified several critical vulnerabilities in the TCP stacks of Linux and FreeBSD that allow for remote initiation of kernel crashes or excessive resource consumption when processing specially crafted TCP packets (packet-of-death). The issues are caused by errors in the handlers for maximum segment size (MSS) in TCP packets and the selective acknowledgment (SACK) mechanism. CVE-2019-11477 (SACK Panic) […]

Interactive Roadmap for Web Development Learners

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The codery.camp programming school continues to develop in the village. Recently, we completed a complete overhaul of the web development course, which is now available online as well. For structuring the theoretical materials, we applied an unusual solution – all of them are combined into an interactive graph that serves as a convenient roadmap for those studying web development. The materials are interlinked and, besides the theory itself, contain exercises on […]

At the beginning of next year, Phison will present an SSD controller with a speed of 6500 MB/s.

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Phison is working on a new controller designed for next-generation solid-state drives using the high-speed PCI Express 4.0 interface. A key feature of this innovation will be the support for higher data transfer speeds—up to 6500 MB/s. Earlier this year, Phison showcased its PS5016 controller, intended for next-generation solid-state drives with the capability of connecting through four […]

Ubuntu will provide Chromium only as a snap package

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The developers of Ubuntu have announced their intention to stop supplying deb packages for the Chromium browser in favor of distributing self-contained images in the snap format. Starting with Chromium version 60, users have already been given the option to install Chromium from both the official repository and in the snap format. In Ubuntu 19.10, the supply of Chromium will be limited to the snap format only. For users of previous versions of Ubuntu […]

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