The CyberGuard field guide

Cybersecurity,
explained clearly.

A practical dictionary for the language behind digital safety. Start with a question, follow a topic, or browse the full collection.

151 published definitions20 security topicsExamples and source links on every page

RESULTS

Terms beginning with D

13 definitions found.

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Network Security

DNS Spoofing

Manipulation of DNS information so a name resolves to an unintended destination.

Privacy Data Protection

Data Minimization

Collecting and retaining only personal data necessary for a defined purpose.

AI Security

Data Prompt Leakage

Data prompt leakage is unintended disclosure of sensitive material supplied to, retrieved by, or generated within an AI application prompt context.

AI Security

Deepfake

A deepfake is synthetic or altered audio, video, or imagery made to depict a person saying or doing something they did not actually say or do.

Network Security

Denial of Service

An event or attack that prevents legitimate users from accessing a service.

Web Application Security

Dependency Confusion

Dependency confusion is a software supply chain attack in which a build resolves an unintended public package in place of an expected private package.

Web Application Security

Deserialization Vulnerability

A deserialization vulnerability occurs when an application unsafely reconstructs data or objects from untrusted input.

Incident Response

Detection Engineering

Detection engineering is the design, testing, and maintenance of logic that identifies meaningful signs of suspicious activity in security data.

Business Cybersecurity

Disaster Recovery

The restoration of technology systems and data after a major disruptive event.

Business Cybersecurity

Disaster Recovery Exercise

A disaster recovery exercise is a planned test of people, procedures, and systems used to restore technology after a disruptive event.

Network Security

Domain Name System

A distributed system that translates domain names into DNS records such as IP addresses.

Malware

Dropper

A dropper is a program whose main role is to deliver or install another malicious component onto a system.

Network Security

Dynamic Host Configuration Protocol

Dynamic Host Configuration Protocol automatically supplies network settings such as an IP address, subnet information, gateway, and DNS servers to a device.