Glossary

A video that is potentially malicious.

Cryptographic algorithms that use the same key for encryption and decryption. Block ciphers and stream ciphers are common types of symmetric cryptographic algorithms.

Symmetric encryption algorithms are algorithms for cryptography that use the same cryptographic keys for both the encryption of plaintext and the decryption of ciphertext data. Symmetric encryption algorithms may operate in various modes which apply either stream or block ciphers.

The cyber supply chain, infrastructure, operating systems and applications supporting the processing, storage or communication of data, including the governance framework within which they operate.

System administration refers to the management of one or more hardware and software systems. Also referred to as 'sys admin'.

A system administration role performed by a human user with privileged access.

The classification of a system is the highest classification of data which the system is authorised to store, process or communicate.

Critical infrastructure or essential service

The executive responsible for a system.

A document that describes a system and its associated security controls.