1) To hide evidence of an attacker's presence
2) To hide a back door into the system
KERNEL In computing, the kernel is the central component of most computer operating systems; it is a bridge between applications and the actual data processing done at the hardware level. The kernel's responsibilities include managing the system's resources (the communication between hardware and software components).
In computing, the kernel is the central component of most computer operating systems; it is a bridge between applications and the actual data processing done at the hardware level.
The four types of rootkits are: User-mode Rootkits: These operate at the application layer, modifying user-level applications and system calls to hide malicious activities. Kernel-mode Rootkits: These have deeper system access, modifying the operating system's kernel to hide their presence and manipulate system operations. Bootkits: These target the system's boot process, infecting the bootloader to gain control before the operating system loads. Firmware Rootkits: These reside in firmware, such as BIOS or UEFI, allowing them to maintain persistence and control over the hardware, even after the operating system is reinstalled.
user level theads are not tranparent to kernel level threads.
Kernel mode By A Raju
KERNEL In computing, the kernel is the central component of most computer operating systems; it is a bridge between applications and the actual data processing done at the hardware level. The kernel's responsibilities include managing the system's resources (the communication between hardware and software components).
Operating systems are designed with a series of layers. The three main layers are the user level, the system level including administration, and the kernel level that includes hardware.
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The Linux kernel is the central component of the GNU/Linux operating system. The kernel is the lowest level of interaction between the hardware and the operating system. Individual applications are at a higher level. The kernel along with supporting applications make up the operating system.
Because a kernel is the main component of most computer operating system,it is bridge between application and the actual data processing done at hardware level .The kernel responsibility include managing the system resources. sanjjit------thank you
A software application is a program or group of programs designed for end users of low-level programs that interact with the computer at a very basic level.
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