Including all the upstream security and software updates from the Gentoo Linux repositories as of January 14, 2018, Porteus Kiosk 4.6.0 is powered by the Linux 4.14.13 kernel and includes the Mozilla Firefox 52.5.3 ESR and Google Chrome 63.0.3239.132 web browsers, protecting users against the Meltdown and Spectre security vulnerabilities that have been publicly disclosed earlier this month. New features of the Porteus Kiosk 4.6 release include Intel and AMD microcodes compiled directly into the Linux kernel to be loaded early in the boot process, support for real-time monitoring of the client resources in Porteus Kiosk Server, as well as the ability for the VNC daemon to display a pop-up window before establishing a connection and prompt the kiosk user to allow or reject it.