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Does GDPR Require Encrypted File Sharing?

UK GDPR does not require every file to be encrypted in every situation. Security measures should be appropriate to the risk, and encryption can be an important option.

Specialist view

Encryption is not a magic compliance switch. It is one security measure that becomes more important as the sensitivity and impact of the document increase.

3 min readUpdated 23 September 2026

The short answer

UK GDPR does not say that every document must always be encrypted. It expects appropriate technical and organisational measures based on the nature, scope, context, purpose and risk of the processing.

That means encryption may be appropriate for some document-sharing workflows and insufficient on its own for others.

When encryption is especially relevant

Encryption becomes more important where documents contain identity information, financial records, payroll data, health context, legal material, customer data or other information that could cause harm if exposed.

It should usually be paired with access controls, recipient verification, expiry and auditability. Encryption protects data, but it does not by itself confirm that the right person accessed the document.

How to make a risk-based decision

Review what the document contains, who needs access, how long they need it and what would happen if the wrong person received it. Then choose safeguards proportionate to that risk.

Duckuments can support this decision by assessing document sensitivity and applying stronger controls where the content calls for it.

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