Privacy by Design (PbD) is a legal obligation under GDPR Article 25, requiring organizations to integrate data protection into the design of systems, processes, and products from the outset — not as an afterthought. Article 25 also requires data protection by default, meaning that only the minimum necessary personal data is processed unless the individual actively chooses otherwise. Your Secure Privacy DPO ensures both principles are applied consistently across every new project, product, and system your organization develops or deploys.
Who Is This For?
Data Protection Officers and privacy managers responsible for GDPR Article 25 compliance
Product managers and developers building systems or features that involve personal data processing
IT and security teams designing access controls, retention policies, and data minimization measures
Legal and compliance teams reviewing new projects for GDPR privacy requirements before launch
What Is Privacy by Design Under GDPR Article 25?
Privacy by Design is the principle that data protection must be embedded into the architecture of systems and processes from the earliest stage of design — not retrofitted after development is complete. GDPR Article 25(1) makes this a legal requirement, obligating controllers to implement appropriate technical and organizational measures both at the time of design and throughout the processing lifecycle. Organizations that launch data processing systems without a documented Privacy by Design approach risk regulatory enforcement and are unable to demonstrate GDPR accountability under Article 5(2).
The Seven Foundational Principles of Privacy by Design
Privacy by Design is built on seven foundational principles, each of which your DPO applies when reviewing new projects and systems:
Proactive, not reactive: Anticipate and prevent privacy-invasive events before they occur — rather than addressing them after a breach or complaint has happened.
Privacy as the default setting: Ensure personal data is automatically protected in any given system or process, without requiring any action from the individual.
Privacy embedded into design: Build data protection into the architecture and design of IT systems and business practices — not bolted on as a separate layer.
Full functionality — positive-sum, not zero-sum: Accommodate all legitimate interests without unnecessary trade-offs, demonstrating that privacy and functionality are not mutually exclusive.
End-to-end security — lifecycle protection: Protect personal data securely throughout its complete lifecycle, from collection through to secure deletion.
Visibility and transparency: Keep processing operations open and transparent to individuals and verifiable by supervisory authorities.
Respect for user privacy: Keep the interests, needs, and rights of the individual at the center of system design and processing decisions.
DPO Project Privacy Review: Privacy by Design in Practice
When your organization launches a new project, product, or system involving personal data, your Secure Privacy DPO provides structured privacy input at every phase of the project lifecycle:
Project Phase |
DPO Input |
|---|---|
Planning |
Privacy requirements gathering, DPIA screening, lawful basis identification |
Design |
Data minimization review, retention planning, access control design, consent mechanism design |
Development |
Security measure validation, privacy notice drafting, DPA review for new vendors |
Testing |
Privacy testing checklist review, data protection verification before go-live |
Launch |
Final compliance sign-off and monitoring plan establishment |
Operation |
Ongoing compliance monitoring and periodic Privacy by Design reviews |
GDPR Data Protection by Default: Default Settings Review
GDPR Article 25(2) requires that, by default, only personal data that is necessary for each specific processing purpose is collected, retained, and made accessible. Your DPO reviews the default settings of every new system or product to verify compliance with this requirement:
Only the minimum necessary personal data is collected by default — no optional fields are pre-populated or active
Data sharing with third parties is opt-in rather than opt-out by default
Retention periods are set to the minimum necessary for the stated processing purpose
Access to personal data is restricted by default to those with a legitimate operational need
Privacy notices are clear, accessible, and presented at the point of data collection
Any system that collects more data than necessary by default, or that shares data unless the user actively opts out, is non-compliant with Article 25(2) and requires remediation before launch.
Frequently Asked Questions
What is the difference between Privacy by Design and data protection by default?
Privacy by Design (Article 25(1)) requires data protection to be built into the design of systems and processes from the outset. Data protection by default (Article 25(2)) is a more specific obligation requiring that systems are configured to process only the minimum necessary personal data by default — without any action required from the individual. Both obligations apply simultaneously to all new systems and processing activities.
Does Privacy by Design apply to existing systems or only new ones?
GDPR Article 25 applies to processing activities both at the time of design and throughout the processing lifecycle. While the obligation is most clearly triggered at the design stage of new systems, organizations are also expected to review and remediate existing systems where privacy protections fall below the required standard — particularly when processing activities are significantly changed or expanded.
When should a DPIA be conducted in relation to a Privacy by Design review?
A DPIA should be initiated at the planning stage — as early in the project lifecycle as possible — before significant design decisions have been made. This allows the DPIA findings to inform design choices, rather than requiring costly changes after development is complete. Your DPO conducts a DPIA screening assessment at the planning phase to determine whether a full DPIA is required.
What happens if a product is launched without a Privacy by Design review?
Launching a system that processes personal data without implementing Privacy by Design and data protection by default measures is a direct violation of GDPR Article 25 and can result in enforcement action. It also creates downstream compliance risk — including potential DPIA obligations, breach exposure, and the cost of retrofitting privacy controls after launch. Your DPO's involvement at the planning stage prevents these risks before they materialize.