The FREE Cybersecurity Glossary by Thor Pedersen!

Lower Order Languages: Programming languages that are closer to machine code or assembly language than high-level languages. They offer limited abstraction from hardware, providing greater control over memory and processors, making them suitable for tasks requiring direct hardware manipulation or high performance. Examples include assembly language and machine language, which involve instructions directly executed by the CPU. These languages can be more challenging to write and maintain but offer efficiency crucial for specific low-level programming tasks.

Merkle Tree: A Merkle tree, named after Ralph Merkle, is a data structure in cryptography and computer science that consists of a hierarchical series of cryptographic hashes. Each non-leaf node is a hash of its respective children, and the hashes are organized into a binary tree. Merkle trees are used to efficiently and securely verify the contents of large data structures, such as the blocks in a blockchain, where they help confirm the integrity of transaction data.

Modbus: A communication protocol used in industrial automation systems to allow devices to communicate with each other and exchange data. It is commonly used in the manufacturing and energy industries to control and monitor equipment. Examples include using Modbus to control the temperature of a furnace in a factory or the flow of oil in a refinery.

Multi-protocol Label Switching (MPLS): A data-carrying technique that directs data from one network node to the next based on short path labels rather than long network addresses. The labels identify virtual links (paths) between distant nodes rather than endpoints, allowing for high-speed and flexible data transmission.

Native Libraries: Collections of subroutines or classes typically written in a low-level language like C or C++ that provide a set of functions to perform a specific set of operations or compute tasks. They are directly compiled into machine code for the platform they are developed on, hence the term 'native'. They can be used by high-level languages or applications on the same platform for better performance or to access low-level resources.

Network Database Management Model: The Network Database Management Model is a flexible approach for modeling complex data relationships where each record can have multiple parent and child relationships. This contrasts with the hierarchical database model, which restricts records to a single parent, allowing for more versatile relationship mapping. However, this term is somewhat obsolete and is now mainly of historical interest, as contemporary databases typically use relational or non-relational models.