what is an ‘integrity breach’ in the context of gdpr?
An integrity breach under GDPR refers to the unauthorised or accidental alteration of personal data, compromising its accuracy, completeness, or reliability.
This falls within the broader GDPR definition of a "personal data breach" in Article 4(12), which includes any security incident causing destruction, loss, alteration , unauthorised disclosure, or access to personal data.
Core Definition
GDPR groups breaches into a "CIA triad" (confidentiality, integrity, availability):
- Integrity breach : Data is tampered with, corrupted, or edited without permission—e.g., a hacker changes medical records or a glitch corrupts customer details, making info unreliable.
- Unlike confidentiality (leaked data) or availability (lost access), integrity hits accuracy , violating Article 5(1)(d)'s mandate for "accurate and up-to-date" data.
Imagine a retail database where prices or addresses get silently flipped; customers receive wrong orders, eroding trust and triggering fines up to €20M or 4% of global turnover.
Real-World Examples
Breaches often blend types, but here's how integrity stands out:
- Malicious edit : Cyberattack alters employee salaries in HR systems.
- Accidental corruption : Software bug overwrites shipping details during migration.
- Ransomware twist : Attackers encrypt and modify files before demanding payment.
Regulators like the UK's ICO list 20+ cases mixing integrity with others, from misfiled records to hacked databases.
Breach Type| Description| Example Impact
---|---|---
Confidentiality 1| Unauthorised access/disclosure| Data leaked to wrong
email
Integrity 3| Unauthorised/accidental alteration| Records corrupted or
faked
Availability 5| Loss/destruction of access| Server wipe or fire damage
Reporting & Prevention
Notify authorities within 72 hours if high risk to rights/freedoms; no breach? Still log it.
Prevention tips :
- Encrypt data in transit/rest.
- Use access controls and audit logs.
- Regular backups and integrity checks (e.g., hashing).
- Train staff on phishing/software errors.
As of early 2026, trends show rising integrity risks from AI tampering and supply-chain hacks—stay vigilant!
TL;DR : Integrity breach = messed-up data accuracy under GDPR; report fast, prevent with tech + training.
Information gathered from public forums or data available on the internet and portrayed here.