One of the most influential and polarizing figures in Linux has decided to embark on a new path. Lennart Poettering, the German software engineer known by transforming the foundations of modern Linux distributions with projects like Systemd, PulseAudio and Avahi, has left Microsoft after four years with the company.
Far from retiring, Poettering has teamed up with his former colleagues of Redmond and Red Hat, Chris Kühl and Christian Brauner, to found Amutable, a Berlin-based startup which seeks to redefine security in Linux systems.
The End of an Era at Microsoft and the Birth of Amutable
La Poettering's career has been marked by controversy and technical innovation. After a long career at Red Hat since 2008, His signing with Microsoft in 2022 was seen by many as a surprising move, given the history of tensions between the open source community and the Redmond giant. His departure last month, along with that of Christian Brauner (maintainer of the Linux kernel) and that of Chris Kühl the previous year, marks the beginning of a new independent stage for this trio of high-profile engineers.
Both Poettering and Brauner have confirmed that their new adventure This business arrangement will not affect their roles in the community: Brauner will continue to maintain his part of the Linux kernel, and Poettering will continue to lead the development of Systemd.However, their main focus is now on Amutable, a company whose mission is to address a critical problem: the growing insecurity of Linux platforms, which today power everything from cloud infrastructure to embedded devices, making them a lucrative target for cybercriminals.
A New Security Philosophy
La Amutable's value proposition is clear: Abandoning reactive security in favor of proactive integrity. According to the company manifesto, the current approaches based on monitoring agents that look for vulnerabilities and intrusions They are "costly, fragile, and ineffective."a kind of cat and mouse game where the attackers are always perfecting their evasion techniques.
"We rely on the search for strategies because we lack a clear vision of what is right and how to protect it. We wire buildings and wait for the circuit breakers to trip," the founders criticize.
Against this, Amutable seeks to develop Linux systems with verifiable integrity mechanisms cryptographically and guarantees of determinism. The goal is to ensure safety and regulatory compliance They should be a natural result of a robust architecture, not a patch added later.
"Amutable will rigorously replace heuristics," they claim, promising to lay the groundwork for this verification in the coming months. The founding team is complemented by other prominent figures in free software development, such as David Strauss, Rodrigo Campos Catelin, and Zbyszek Jędrzejewski-Szmek, among others.
Lennart Poettering's career has been characterized by challenging the status quo. Systemd, his most famous creation, replaced the venerable System V init system and, despite fierce resistance from Unix traditionalists who accused it of violating the philosophy of simplicity and modularity, it ended up being adopted by virtually all major distributions such as Ubuntu, Debian, Fedora, and RHEL.
"With Linux dominating cloud infrastructure, companies need security professionals who understand boot integrity, code signing, and verification—skills that are not covered by most certification programs," Porter added.
His willingness to drive profound architectural changes, even in the face of strong opposition, has demonstrated the power of his technical vision, although it has also generated tensions within the collaborative community. With Amutable, Poettering seems ready to apply that same disruptive mindset to the field of security, an area where the need for new solutions is increasingly urgent. It remains to be seen whether this new initiative will generate the same level of debate as its previous projects, but what is certain is that the industry will be watching the next steps of this new Berlin-based company very closely.
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