GDPR Article 5 — Principles of processing

Note: this explainer is informational and framework references are never a compliance guarantee — align your program with your legal counsel.

What Article 5 requires

Article 5 sets the GDPR's core principles for processing personal data: lawfulness, fairness and transparency, purpose limitation, data minimization, accuracy, storage limitation, integrity and confidentiality — and, crucially, accountability: the controller must be able to demonstrate compliance with all of them.

What it means for your company

Every time an employee pastes a customer email thread, an applicant CV, or a support ticket into an AI chat, your organization is processing personal data — usually outside the purpose it was collected for and beyond what the task requires. Article 5 doesn't care that it happened in a browser tab; the minimization and accountability duties are yours.

How Shield operationalizes it

The Transform PII before it reaches AI tools and Transform financial data presets (both referenced to Art. 5) redact personal data — email addresses, phone numbers, national and tax IDs, IBANs, card numbers — in prompts and pastes locally, on the device, before anything is sent. The task goes through; the personal data doesn't. That is data minimization enforced mechanically at the exact boundary where it used to fail, and every enforcement lands in the audit trail — your accountability evidence.

Both presets ship active in every new organization and live in the preset library.

The outcome

Personal data stops leaking into AI tools by default rather than by memo — and when someone asks how you ensure minimization in AI usage, you show a policy and a log, not a hope.