Bootloader Integrity

Bootloader integrity refers to the state where the software responsible for initializing the operating system has not been modified or corrupted. The bootloader is the first code that runs when a device is powered on, making it a primary target for attackers.

If an attacker can replace the bootloader, they can gain complete control over the device, bypassing all subsequent security measures. Ensuring bootloader integrity typically involves cryptographic verification, where the device firmware checks the bootloader's signature before execution.

In the context of financial hardware, maintaining this integrity is vital for ensuring that the device remains in a known-good state. It is a critical component of the overall secure boot process, providing the foundation for a trusted computing environment.

Without verified bootloaders, the entire security stack is vulnerable to persistent threats that survive reboots.