Dubbed “the high security boot process,” PureBoot promises to be a complete and secured solution for more secure boot process on laptop and desktop computers that run a Linux-based operating system, including Purism’s Debian-based PureOS, which comes pre-installed with the Librem 13 and Librem 15 laptops. PureBoot is not a new software, but a collection of software and security standards that Purism already uses on its Linux laptops, including the Librem Key USB security token, a TPM (Trusted Platform Module) chip, the coreboot free BIOS replacement, the Heads tamper-evident boot software, the disabled Intel ME (Management Engine), and multi-factor authentication.