Part 4/7:
However, the real innovation lies in the "Bring Your Own Vulnerable Driver" technique. This approach exploits the way the Windows kernel architecture is designed, where drivers run in a privileged "ring zero" mode, granting them access to sensitive system resources.
In Windows, user-level code runs in "ring three," while the kernel and its associated drivers operate in the more privileged "ring zero." Gaining access to this kernel-level authority, known as "system privileges," is the holy grail for many hackers, as it allows them to execute malicious code with the highest level of control.