Learn in the textbookSecure Development (By-Design Principles and Vulnerability Countermeasures)
DefinitionPrivacy by Design (プライバシーバイデザイン) is the approach of building the protection of personal information and privacy into a system or service from the earliest planning and design stages.
ExplanationFor example, you collect only the personal data the stated purpose requires, and choose defaults that give strong protection even if users change nothing. These choices are made at design time, because changing how personal data is handled later means revisiting data already collected and mechanisms already built.
AnalogyIt is like designing a membership application form and cutting it down to only the fields you really need before handing any out.
Memory hookThe idea was put forward in the 1990s by the official in charge of privacy protection in Ontario, Canada, and is often shortened to PbD.