IT-Sicherheit

GDPR Technical Measures: What Companies Really Need to Implement

Nico FreitagIT-Sicherheit

GDPR requires 'appropriate technical and organizational measures' to protect personal data. But what does that mean concretely? Many companies have privacy policies and data processing agreements – but the technical implementation lags behind. This guide shows the technical measures every company should implement to be GDPR-compliant and avoid fines.

Encryption: The Foundation

Encryption is the most important GDPR technical measure. Art. 32 names it explicitly. Encryption at Rest – All personal data must be stored encrypted. Databases, files, and backups. Encryption in Transit – TLS 1.3 for all connections. HTTPS is mandatory. Email Encryption – S/MIME or PGP for confidential communication. Important: Encryption can reduce fines. If encrypted data is stolen, reporting may not be required. More in our Encryption Guide.

Access Control and Permission Management

Need-to-Know Principle – Only employees who need personal data for their work may access it. Role-Based Access Control (RBAC) – Permissions via roles, not individually. MFA – Best practice for systems with personal data. Details in our Password Management Guide. Logging – Every access to personal data must be logged. Regular Reviews – Quarterly check if access rights are still current.

Pseudonymization and Anonymization

GDPR explicitly requires pseudonymization (Art. 25): Pseudonymization – Personal data replaced by pseudonyms. Key stored separately. Anonymization – Data altered so no personal reference is possible. Anonymized data falls outside GDPR. Practical implementation: - Databases: Separate key mapping table - Analytics: IP anonymization - Test data: Never use production data in test environments

Data Backup and Deletion Concept

Backup Strategy – Regular, encrypted backups are GDPR-required. Details in our Backup & Disaster Recovery Guide. Deletion Concept – Art. 17 GDPR: Right to erasure must be technically implementable: - Automatic deletion periods - Deletion across all systems (including backups) - Documented deletion processes - Proof of deletion Data Minimization – Only collect data actually needed.

Incident Response and Reporting Obligations

GDPR requires reporting to the supervisory authority within 72 hours. Technical Prerequisites: - Monitoring systems to detect data breaches - Automatic notifications for unusual data access - Prepared reporting channels An Incident Response Plan must explicitly address GDPR reporting obligations. At Axis/Port., we support technical GDPR implementation. Contact our IT security team for individual consulting.

Fazit

GDPR compliance is not a one-time project. Encryption, access control, and deletion concepts must be continuously maintained. At Axis/Port., we help with technical implementation.

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