The FREE Cybersecurity Glossary by Thor Pedersen!

Job Rotation: A security practice where employees are moved from one job to another within an organization. It is intended to prevent employees from gaining excessive knowledge or control over a particular system or process, reducing the risk of fraud or insider threats. It is used in personnel security and access control. Examples include rotating IT staff between different departments or rotating security guards on different shifts.

Journal entry: A written record of a financial transaction or other business event. It includes the date, description, and amount of the transaction and is used to track and document business activities. It is used in accounting and auditing. Examples include recording a sale or recording a payment.

Jump hosts: A computer or server that acts as an intermediary between a user's device and the target system they are trying to access. It is used to securely connect to remote networks and improve the security of remote access. Examples of jump hosts include VPN servers and bastion hosts.

Just-in-time (JIT) access: Just-in-time (JIT) access is a privilege management approach where users are granted necessary permissions only when required and for the shortest duration necessary to complete tasks. This minimizes the risk of unauthorized access or security breaches by limiting the window of opportunity for attackers. JIT access is often implemented in privileged access management solutions.

Kerckhoffs' Principle: Kerckhoffs' Principle states that a cryptographic system should be secure even if everything about the system is public knowledge, except for the key. It underlines the need for cryptographic algorithms to be open to scrutiny without compromising security, thereby placing the burden of secrecy solely on the key and not on the system's design.

Kernel mode: A mode of operation in an operating system where the system has complete control over the hardware and can execute any instructions. It is used for low-level tasks and is protected from user interference to prevent system instability. It is used in operating systems and computer architecture. Examples include managing memory or controlling device drivers.