The FREE Cybersecurity Glossary by Thor Pedersen!

Nonintrusive monitoring: The observation and measurement of system activity in a way that does not affect the operation or performance of the system. This could involve gathering and analyzing log files, traffic patterns, or user behavior while minimizing impact on the system and its users.

No notice assessment: No notice assessments are unannounced evaluations or tests performed to assess the effectiveness of an organization's security posture. By simulating a realistic scenario without forewarning, these assessments can provide a more accurate representation of how an organization would respond to an actual incident or threat.

Non-repudiation: A property of systems that provides assurance that someone cannot deny the validity of something. Typically used in digital security, it provides proof of the origin or delivery of data to protect the sender against false denial by the recipient that the data has been received or to protect the recipient against false denial by the sender that the data has been sent.

Non-statistical sampling: Non-statistical sampling refers to selecting a sample based on criteria other than statistical methods, often used when a high degree of confidence in the representativeness of the sample isn't required or when other practical considerations drive the selection. Examples include judgmental or purposive sampling.

Normalization: The process of organizing a database to minimize redundancy and dependency. It is used in database design to improve the efficiency and organization of data. Examples include breaking up a large table into smaller, related tables and removing repeating data.

North-South APIs: These APIs enable connectivity between an organization's internal network and external entities, such as third-party services, partners, and customers. North-South API traffic is often subject to intense scrutiny by CISOs, as these APIs expose core business applications to the internet, necessitating stringent security controls to protect against external threats and unauthorized access.