North Korean threat actors known as the Lazarus Group exploited a flaw in the Windows AppLocker driver (appid.sys) as a zero-day to gain kernel-level access and turn off security tools, allowing them ...

The operating system mode. Processors operate either in kernel mode or "user mode." Also called "supervisor mode," the kernel mode enables the OS (kernel) to execute "privileged instructions," which ...

A kernel extension (kext) adds functionality to a macOS operating system (OS). The kernel is the heart of the OS, and extensions may add security or functions required to run in revised hardware, such ...

The notorious North Korean hacking group 'Lazarus' was seen installing a Windows rootkit that abuses a Dell hardware driver in a Bring Your Own Vulnerable Driver attack. The spear-phishing campaign ...