DotNS. Take back your DNS.
A French independent resolver, recognised blocklists and a first-hand no-log assessment. Practical Android and Firefox guides to make your DNS choice deliberate.
Explore the DNS guide →THE SYSWARDEN BLOG
RELEASES / FIELD NOTES / COMMUNITY
Inside
SysWarden.
The engineering behind the defense. A new space for Linux security, practical field notes and the decisions that shape SysWarden.
Discover the official v4.10.0 release, educational defense scenarios, practical guides and conversations with security practitioners. Follow the engineering and the people behind SysWarden.
OPEN SOURCE / OPEN KNOWLEDGE
EXPLORE BY TOPIC
Find your next read.
Linux security, practitioner interviews and the work behind SysWarden. Browse the topics that matter to you.
20 articles across all topics.
SysWarden v5. A clear IVV commitment.
Why financial capacity changes the v5 assurance contract, what IVV still requires and how untested scope will remain visible.
Read the transparency update →
Building SysWarden v5. Earning your trust.
My progress report on 109 merged PRs, safer administration and the donations needed to sustain maintenance and planned independent assessment.
Read the progress report →
Sara Abella: Stay curious. Think critically.
Six questions on curiosity, critical thinking, practical governance and cybersecurity teaching. A conversation about learning to think for yourself.
Read the interview →
Aurélie Laffargue: Turning rules into practice
Six questions on GDPR, supplier accountability, data breach response and practical AI training. A conversation with the founder of SEASY CONSULTING.
Read the interview →
Supply chain security: a CISO's reading of the CCB report
My perspective as a CISO and cybersecurity architect on dependencies, delegated authority, evidence and recovery.
Read the analysis →
Data-Shield IPv4 Blocklists: practical threat intelligence
How I maintain portable IPv4 blocklists, use them with SysWarden and other firewalls, and keep the probes running with community support.
Read the maintainer's perspective →
ISO 27005 and EBIOS RM: how I assess risk before deploying SysWarden
My comparison of ISO 27005 and EBIOS RM, followed by residual risk acceptance and a 500-server Debian 13 deployment procedure.
Read the field guide →
Keep SysWarden independent. Fund the work behind it.
What it takes to maintain independent Linux security software, fund outside scrutiny and keep the test infrastructure running.
Read the funding note →
SysWarden v4.10.0 is here: stronger defense, shared progress
Authenticated HA, clearer evidence and signed Linux packages. Meet the official release and our new ambassadors, Ines Wallon and André Marrec.
Discover the release →
Plumber: Build clean. Ship with confidence.
A Plumber ambassador's perspective on secure delivery, shared responsibility and useful evidence for developers, CISOs, CIOs and GRC.
Read the perspective →
Make the Defense Visible: Seven SysWarden Lab Scenarios
Seven educational scenarios to connect a real signal, a defensive decision and a verified return to normal. With commands, diagrams and evidence.
Explore the scenarios →
SysWarden v4.10.0: From Source to a Linux Host
A practical source preview: build native packages, verify what you install, understand the runtime and keep a complete recovery path.
Read the field guide →
The authentic SysWarden: know the source, support the work
Official channels, clear attribution and a practical way to support independent open-source Linux defence. A note from the creator and maintainer.
Read the perspective →
Sandra Aubert: Making resilience a reflex
From understanding manipulation to preparing a whole community. Five questions on cyber resilience, digital hygiene and the freedom to decide.
Read the interview →
Why I started LinkedIn from scratch, and where SysWarden goes next
A September perspective on rebuilding a professional network and the original v5 assurance plan. Includes a dated note on the November IVV policy change.
Read the perspective →
Bénédicte Steinhard: Protecting the whole chain
From physical security to cybersecurity, GDPR and the realities of healthcare. Five questions about protecting people, access and the whole chain.
Read the interview →
Digital Sovereignty: A Misuse of Terms or Marketing Bullshit?
A flag on a cloud is a start to a sales pitch. Laurent Minne asks what we can actually inspect, maintain, recover and leave.
Read the perspective →
SysWarden: More Than a Destination, a Journey
From Data-Shield blocklists to Linux host defense. Laurent Minne shares the choices, community feedback and ambitions shaping the project.
Read the story →
When SysWarden meets BunkerWeb
Two French open-source projects connect in-band web protection and out-of-band host analysis. A look at the collaboration, the people and the path to defense in depth.
Read the story →More stories are on the way.
Choose another topic or All topics to browse the published stories.
Join the conversationWHAT TO EXPECT
Practical knowledge.
From the project itself.
Planned topics for operators, contributors and everyone following the next chapters of SysWarden.
Linux security in practice.
Host defense, nftables policy and operational lessons from building and testing SysWarden.
Inside the engineering.
Architecture decisions, IVV release assurance and explicit evidence boundaries, with links to the work behind them.
Connected defense.
BunkerWeb integration, deployment guidance and practical contributions from the community.
THE CONVERSATION IS ALREADY OPEN
Bring your questions.
Share a use case or suggest a topic in the official SysWarden Discord.