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Data Breach Complaint Letter Template
How to complain about a data breach and request information and remedy — what to include, your legal rights, and a free letter generator.
← All Letter Templates · Data Protection & GDPR · Last updated 18 August 2026
This is free rights guidance, not legal advice. For advice specific to your situation, see our About page or contact Citizens Advice.
If you need to complain about a data breach and request information and remedy, a written letter is the recommended first step — it creates a clear record and shows you're pursuing the matter formally. Below is what a strong data breach complaint letter should include, plus a free tool to generate yours.
What this letter needs to cover
- Describe what data was involved and how the breach occurred
- Request full details of the breach, what data was affected and what steps the organisation is taking
- Reference their obligation to report to ICO within 72 hours
- Request confirmation of steps taken to prevent recurrence
- Reserve right to claim compensation
See our full letter template library for related templates, or use our free checkers for guidance specific to your situation.
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