The FREE Cybersecurity Glossary by Thor Pedersen!

Assurance: The degree of confidence one has in the security measures implemented to protect an organization's systems and data. It involves various practices, including regular audits, testing, and reviews, to verify that the implemented security controls are effective and that they meet the organization's security objectives.

Assurance Engagement: An examination conducted by an independent party to evaluate and provide assurance on the effectiveness and efficiency of systems, processes, or controls within an organization. This engagement aims to enhance stakeholders' confidence in the organization's operations and reliability.

Asymmetric Cipher: An encryption algorithm where two separate keys are used, one for encryption (the public key) and another for decryption (the private key). It's distinct from symmetric ciphers, which use the same key for both encryption and decryption. Asymmetric ciphers, such as RSA, are fundamental for secure data exchange over the Internet.

Asymmetric Encryption or Asymmetric Cryptography: Asymmetric encryption, also known as public-key cryptography, is a form of encryption where keys come in pairs. What one key encrypts, only the other can decrypt. This method enables secure, encrypted communication between parties who have not previously exchanged encryption keys, thus providing a solution to what is known as the key distribution problem. It's widely used in many types of data exchange and digital signatures.

Asymmetric key: A pair of keys used in asymmetric encryption. This pair consists of a public key, which may be freely distributed and used for encryption, and a private key, kept secret and used for decryption. The uniqueness of this approach is that data encrypted with one key can only be decrypted by its counterpart, providing a powerful tool for secure communications.

Asymmetric Multiprocessing: A type of multiprocessing system where each processor is assigned specific tasks or applications, leading to an unequal distribution of the computational workload. This contrast with symmetric multiprocessing systems, where each processor performs any task in the workload, often requires a thoughtful approach to security due to the distinct roles of each processor.