DAPLE (C1) study materials
DAPLE (C1) study resources

DAPLE (C1) key terms

DAPLE (C1) · Get comfortable with the vocabulary.

Data Protection Impact Assessment (DPIA)

A structured analysis carried out before processing that is likely to be high risk, identifying necessity, proportionality, risks to individuals and the safeguards that reduce them.

Related: Privacy by Design, High-Risk Processing, Accountability
Accountability

The obligation to take active responsibility for compliance and to be able to demonstrate it through records, policies, assessments and evidence rather than mere intention.

Related: DPIA, Records of Processing Activities, Privacy Governance
Data Subject Rights

The powers individuals hold over their personal data, typically including access, correction, erasure, restriction, portability and objection, each subject to defined conditions and deadlines.

Related: Subject Access Request, Erasure
Controller

The organisation or body that alone or jointly determines why and how personal data is processed, and therefore carries the primary legal duties.

Related: Processor, Joint Controllers, Accountability
Processor

An organisation that processes personal data on behalf of and under the documented instructions of a controller, with duties of confidentiality, security and assistance.

Related: Controller, Data Processing Agreement, Sub-Processor
Joint Controllers

Two or more parties that jointly determine the purposes and means of processing, sharing responsibility and required to allocate duties transparently to individuals.

Related: Controller, Processor
Sub-Processor

A third party engaged by a processor to carry out part of the processing, requiring controller authorisation and equivalent contractual obligations down the chain.

Related: Processor, Data Processing Agreement, Supply Chain Risk
High-Risk Processing

Processing likely to result in a significant impact on individuals, such as large-scale sensitive data, systematic monitoring or automated decisions, which triggers extra safeguards and assessments.

Related: DPIA, Automated Decision-Making, Special Category Data
Special Category Data

Sensitive personal data such as health, biometrics, ethnicity, religion, political views or sexual orientation, which needs a specific legal basis and stronger controls.

Related: High-Risk Processing, Data Classification, Lawful Basis
Lawful Basis

The legal ground that makes a processing activity permissible, such as consent, contract, legal obligation, vital interest, public task or legitimate interest.

Related: Consent, Legitimate Interest, Purpose Limitation
Purpose Limitation

The principle that personal data may only be used for the specific, explicit and legitimate purposes stated when it was collected, unless a compatible new purpose applies.

Related: Lawful Basis, Data Minimisation, Compatibility Assessment
Data Minimisation

Collecting and retaining only the personal data that is adequate, relevant and necessary for the stated purpose, avoiding surplus fields and indefinite retention.

Related: Purpose Limitation, Retention Schedule, Privacy by Design
Consent

A freely given, specific, informed and unambiguous indication of agreement, withdrawable at any time and requiring evidence that it was validly obtained.

Related: Lawful Basis, Consent Management Platform
Legitimate Interest

A lawful basis relying on a genuine business or third-party interest that is not overridden by individual rights, documented through a balancing assessment.

Related: Lawful Basis, Legitimate Interest Assessment
Data Classification

Assigning data to defined sensitivity tiers so that handling, access, retention and protection requirements are proportionate and consistently applied.

Related: Data Inventory, Data Minimisation, Access Control
Data Inventory

A maintained catalogue of datasets recording what personal data exists, where it resides, who owns it, how it flows and why it is held.

Related: Data Classification, Records of Processing Activities, Data Flow Mapping
Records of Processing Activities (ROPA)

The formal register of processing operations, describing purposes, categories of data and individuals, recipients, transfers, retention and security measures.

Related: Data Inventory, Accountability, Data Flow Mapping
Data Flow Mapping

Diagramming how data moves between systems, teams and external parties, capturing collection points, transfers, storage locations and onward disclosures.

Related: Data Inventory, Cross-Border Transfer, Records of Processing Activities
Retention Schedule

A rule set defining how long each data category is kept and how it is disposed of once the purpose or legal retention period ends.

Related: Data Minimisation, Erasure, Data Classification
Defence in Depth

Layering independent preventive, detective and corrective controls so that the failure of one safeguard does not expose the data protected by the others.

Related: Access Control, Encryption at Rest, Zero Trust
Zero Trust

A security model that verifies every request explicitly and grants least privilege, rather than trusting users or devices because of their network location.

Related: Least Privilege, Multi-Factor Authentication, Defence in Depth
Pseudonymisation

Replacing direct identifiers with tokens so that data can no longer be attributed to an individual without separately secured additional information.

Related: Anonymisation, Encryption at Rest, Key Management
Anonymisation

Irreversibly transforming data so that no individual can be identified by any means reasonably likely to be used, taking account of singling out and linkage.

Related: Pseudonymisation, Re-Identification Risk
Encryption at Rest

Protecting stored data by converting it into unreadable ciphertext, so that lost media or unauthorised storage access does not expose the underlying content.

Related: Encryption in Transit, Key Management, Defence in Depth
Encryption in Transit

Protecting data while it moves across networks using protocols such as TLS, preventing interception or tampering between sender and recipient.

Related: Encryption at Rest, Cross-Border Transfer
Key Management

The lifecycle discipline of generating, storing, rotating, escrowing, revoking and destroying cryptographic keys with separation of duties and audit trails.

Related: Hardware Security Module, Encryption at Rest, Cryptographic Agility
Hardware Security Module (HSM)

A tamper-resistant device that generates and stores keys and performs cryptographic operations so that key material never appears in plain form on general systems.

Related: Key Management, Cryptographic Agility
Cryptographic Agility

Designing systems so that algorithms, key lengths and providers can be replaced quickly without redesigning applications, in response to new threats or standards.

Related: Key Management, Post-Quantum Cryptography
Least Privilege

Granting each identity only the minimum access needed for its current task, for the shortest time, and removing it when no longer required.

Related: Role-Based Access Control, Zero Trust, Privileged Access Management
Role-Based Access Control (RBAC)

Assigning permissions to job roles rather than individuals, so that users inherit rights through their role and access stays consistent and reviewable.

Related: Least Privilege, Access Review
Multi-Factor Authentication (MFA)

Requiring two or more independent authentication factors, such as something known plus something held, to reduce the impact of stolen credentials.

Related: Zero Trust, Privileged Access Management
Privileged Access Management

Controls over high-power accounts, including vaulting of credentials, just-in-time elevation, session recording and frequent review of administrative rights.

Related: Least Privilege, Multi-Factor Authentication, Access Review
Personal Data Breach

A security incident leading to accidental or unlawful destruction, loss, alteration, unauthorised disclosure of, or access to, personal data.

Related: Breach Notification, Incident Response Plan, Risk to Individuals
Breach Notification

The duty to inform a supervisory authority, and sometimes affected individuals, within tight deadlines when a breach is likely to create a risk to rights and freedoms.

Related: Personal Data Breach, Risk to Individuals, Forensic Readiness
Forensic Readiness

Preparing logging, time synchronisation, evidence handling and chain-of-custody procedures in advance so incidents can be investigated and defended credibly.

Related: Incident Response Plan, Breach Notification
Data Processing Agreement (DPA)

A contract imposing documented instructions, security, confidentiality, sub-processor rules, assistance and deletion duties on a processor acting for a controller.

Related: Processor, Sub-Processor, Standard Contractual Clauses
Cross-Border Transfer

Moving personal data to another jurisdiction, permitted only where a transfer mechanism and, where required, additional safeguards and assessments are in place.

Related: Standard Contractual Clauses, Transfer Impact Assessment, Data Flow Mapping
Standard Contractual Clauses (SCCs)

Pre-approved contractual terms used to legitimise transfers to recipients in countries without an adequacy decision, binding both parties to data protection obligations.

Related: Cross-Border Transfer, Transfer Impact Assessment, Data Processing Agreement
Transfer Impact Assessment (TIA)

An analysis of the destination country's laws and practices, and of supplementary measures, to judge whether transferred data retains equivalent protection.

Related: Cross-Border Transfer, Standard Contractual Clauses
Privacy by Design

Embedding privacy protections into system architecture and default settings from the outset, rather than adding compliance measures after the design is fixed.

Related: Privacy by Default, DPIA, Data Minimisation
Privacy Enhancing Technologies (PETs)

Technical methods such as differential privacy, secure multi-party computation, homomorphic encryption and synthetic data that reduce exposure of personal data during analysis.

Related: Differential Privacy, Anonymisation, Pseudonymisation
Differential Privacy

Adding calibrated statistical noise to query results so that an individual's presence in a dataset cannot be reliably inferred, with a measurable privacy budget.

Related: Privacy Enhancing Technologies, Re-Identification Risk