Laurent Cheylus
lcheylus@bsd.network
<p>Software engineer specialized in Cybersecurity</p><p>Linux OpenBSD FreeBSD - FOSS Contributor<br />Lyon (France) addict<br />Messages in French 🇫🇷 and English 🇬🇧</p>
Posts
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Deshittification of your Smart TV at Home using OpenBSD pf and Unbound: block Ad Networks and Telemetry while keeping apps like Netflix and Smart TVs working flawlessly - Detailed Article by Lari Huttunen #OpenBSD #Privacy https://fabricati-diem.inform.social/post/deshittification-as-a-service/
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Introduction à Garage, solution open-source compatible S3, auto-hébergée et résiliente (support du multi-nœuds) - Article du magazine SysOps en libre accès (janvier 2026) #S3 #SysOps https://connect.ed-diamond.com/linux-pratique/lp-153/garage-l-alternative-libre-au-stockage-en-datacenter
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Ken Thompson’s Trusting-Trust Attack is not limited to Compilers, this research paper shows that it can be constructed around GNU strip, an ordinary build utility that neither inspects nor generates source code #Research #Infosec https://arxiv.org/abs/2607.24888
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How to cut the Windows GDID (Global Device Identifier), the Tracker that follows you even through a VPN - Detailed Article and Powershell scripts available on GitHub, by Korben #Windows #Privacy https://korben.info/en/gdid-windows-cut-tracker-vpn.html
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Quickly tested the Firefox Nightly version on my Linux desktop, not a huge fan of the UI modifications with rounded tabs and text inputs #Firefox https://blog.mozilla.org/en/firefox/new-firefox-design/
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Import of LibreWolf browser in OpenBSD ports: modified version of Mozilla Firefox focused on privacy, security, and software freedom. Work by Leah Rowe @libreleah@mas.to (also author of Libreboot) #Firefox #OpenBSD https://marc.info/?l=openbsd-ports-cvs&m=178093524651764
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How to secure a Linux Server: an evolving How-To Guide ; Basics, SSH Server, Network, Audit... #Infosec #Linux https://github.com/imthenachoman/How-To-Secure-A-Linux-Server
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forjego-cli: an open-source CLI application written in Rust, for interacting with Forgejo (self-hosted lightweight software forge) https://codeberg.org/forgejo-contrib/forgejo-cli
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Credit Cards are Vulnerable to Brute Force Kind Attacks - Detailed article by Metin Ozyildirim #Infosec #Hacking https://metin.nextc.org/posts/Credit_Cards_Are_Vulnerable_To_Brute_Force_Kind_Attacks.html
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Researchers at the University of Southern California report a new Type of Electronic Memory Device that kept working reliably at 700 degrees Celsius 🔥 #Research #Electronics https://viterbischool.usc.edu/news/2026/03/usc-scientists-build-a-memory-chip-that-survives-temperatures-hotter-than-lava/
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Les JdLL (Journées du Logiciel Libre) auront lieu à l&#39;ENS Lyon les 30 et 31 mai 2026. L&#39;appel à participation est ouvert jusqu&#39;au 15 mars #OpenSource #Lyon https://www.jdll.org/
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Une très bonne synthèse sur la faille CopyFail impactant le noyau Linux : historique de la faille, mécanisme d&#39;exploitation, gestion érratique de la divulgation, mitigation - par Linuxtricks #Infosec #Linux https://www.linuxtricks.fr/news/10-logiciels-libres/600-copy-fail-cve-2026-31431-synthese-technique-sur-cette-faille-linux/
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6 major Password Managers with Tens of Millions of Users are currently vulnerable to unpatched Clickjacking Flaws that could allow Attackers to steal your Secrets - Public disclosure by Marek Tóth at DEF CON 33 #Infosec #Vulnerability https://socket.dev/blog/password-manager-clickjacking
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FreeBSD on 2026 Google Summer of Code: NanoBSD Reimagined, Live-patching for the FreeBSD kernel, Native MPLS Support, Bluetooth Support for HID Devices... #GSoC #FreeBSD https://summerofcode.withgoogle.com/programs/2026/organizations/the-freebsd-project
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Bilan 1 an après la sortie de Saracroche, application mobile permettant de bloquer les spams téléphoniques - Bravo à Camille Bouvat pour cette app open-source respectueuse la vie privée https://cbouvat.com/blog/1an-saracroche/
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Fairphone is recruiting a senior Software Engineer focused on embedded & Android Systems for their Software Engineering Team #Android https://fairphone.jobs.personio.com/job/2599490
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Pantone, l&#39;histoire de l&#39;étrange entreprise qui détient les couleurs du monde entier - Passionnante #Video par What a Fail ! https://youtu.be/1bf6daRS6P8
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Mandiant released an NTLMv1 Database (Rainbow Table) that will allow Defenders and Researchers (and, of course, malicious Hackers, too) to recover Passwords in under 12 Hours using Consumer Hardware costing less than $600 USD #Infosec #Passwords https://arstechnica.com/security/2026/01/mandiant-releases-rainbow-table-that-cracks-weak-admin-password-in-12-hours/
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Initial implementation of Ownership for the V programming language ; inspired by Rust that tracks owned values and prevents use-after-move bugs at compile time #Programming #Vlang https://github.com/vlang/v/blob/master/doc/ownership.md
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Interview de Roberto Di Cosmo à propos du projet « Software Heritage » (préservation du code source de logiciels) - Épisode du #Podcast Monde Numérique par Jérôme Colombain #Audio 🎧️ https://mondenumerique.info/podcast/monde-numerique/episode/pourquoi-il-faut-archiver-tous-les-logiciels-du-monde-roberto-di-cosmo-software-heritage
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A 27-year-old OpenBSD Vulnerability found in TCP SACK assessing Claude Mythos Preview’s Cybersecurity Capabilities ; other Bugs found in FFmpeg, FreeBSD NFS, Linux kernel... #OpenBSD #Infosec https://red.anthropic.com/2026/mythos-preview/
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How to build and install the Electrum Bitcoin Wallet on OpenBSD - Short article by Aaron Miller @aaronm04 #OpenBSD #Bitcoin ₿ https://iforgotmy.name/articles/2026-03-12-electrum-on-openbsd.html
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Abaddon: an alternative Discord Client with Voice Support made with C++ and GTK 3, without Electron #OSS #Discord https://github.com/uowuo/abaddon
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Researchers at IMDEA Networks Institute, together with European partners, have found that Tire Pressure Monitoring System (TPMS) in modern Cars can unintentionally expose Drivers to Tracking #Infosec #Privacy https://techxplore.com/news/2026-02-car-sensors-track.html
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Motorola announces a partnership with GrapheneOS Foundation ; they will work to strengthen Smartphone Security and collaborate on future Devices engineered with #GrapheneOS compatibility https://motorolanews.com/motorola-three-new-b2b-solutions-at-mwc-2026/