Sven Vermeulen is a long term contributor to various free software projectsand the author of various online guides and resources. He got his fi rst taste of freesoftware in 1997 and never looked back since then. In 2003, he joined the ranks of theGentoo Linux project as a documentation developer and has crossed several rolesafter that, including Gentoo Foundation's trustee, council member, project leads fordocumentation, and (his current role) project lead for Gentoo Hardened's SELinuxintegration. In this time frame, he has gained expertise in several technologies, ranging fromoperating system level knowledge to application servers as he used his interestin security to guide his projects further: security guides using SCAP languages,mandatory access controls through SELinux, authentication with PAM, (application)fi rewalling, and more. On SELinux, he has contributed several policies to the reference policy project andparticipates actively in policy development and user space development projects.Sven is an IT infrastructure architect working at a European fi nancial institution.Secured implementation of infrastructure (and the surrounding architecturalintegration) is of course an important part of this. Prior to this, he graduated with anMSc in Computer Engineering at the University of Ghent and then worked as a webapplication infrastructure engineer with IBM WebSphere AS.

Sven is the main author of Gentoo's Handbook which covers the installationand confi guration of Gentoo Linux on several architectures. He also authored theLinux Sea online publication, which is a gentle introduction to Linux for novicesystem administrators.