1. Clarify purpose and legal basis: Describe the business problem and why processing is necessary. An unclear purpose almost always produces an unclear risk assessment.
2. Record data and people: Map data categories, sources, recipients, retention and groups affected. Check special categories, criminal-offence data and children’s data.
3. Map data flows: Record modules, interfaces, hosting, support access, processors and possible transfers to third countries. The page on processors and service providers supports the role and chain review.
4. Test necessity and proportionality: Ask whether the purpose can be achieved with less data, shorter retention or less intrusive technology.
5. Assess impact on people: Consider confidentiality, integrity and availability as well as discrimination, loss of control, incorrect classification or exclusion from services.
6. Define safeguards: These may include access separation, logging, deletion periods, human review, testing, training and a process to correct wrong results.
7. Document and review: Record residual risks, responsibilities and triggers for a new assessment. A DPIA is not a document that can never be reopened.