Glossary - D

Data Aggregation

Any process in which information is gathered and expressed in a summary form, for purposes such as statistical analysis.

Data Breach

Intentional or unintentional release of secure or private/confidential information to an untrusted environment.

Data Loss

An error condition in information systems in which information is destroyed by failures or neglect in storage, transmission, or processing.

Data Loss Prevention (DLP)

A set of tools and processes used to ensure that sensitive data is not lost, misused, or accessed by unauthorized users.

Data Recovery

The process of restoring data that has been lost, accidentally deleted, corrupted or made inaccessible. In enterprise IT, data recovery typically refers to the restoration of data to a desktop, laptop, server or external storage system from a backup.

Data Server

A computer or program that provides other computers with access to shared files over a network.

Data Stewards

A role within an organization responsible for utilizing an organization's data governance processes to ensure fitness of data elements - both the content and metadata.


Discover or identify the presence or existence of a vulnerability, risk, or threat.

Digital Forensics

A branch of forensic science encompassing the recovery and investigation of material found in digital devices, often in relation to computer crime.

Distributed Denial-of-Service Attack (DDoS)

A cyber-attack in which the perpetrator seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to the Internet. Denial of service is typically accomplished by flooding the targeted machine or resource with superfluous requests in an attempt to overload systems and prevent some or all legitimate requests from being fulfilled.

Domain Name

The part of a network address that identifies it as belonging to a particular domain.