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.
Conclusion
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.
About the Author
Nico Freitag
Founder & Geschäftsführer
Nico Freitag is the founder and CEO of AXIS/PORT. With expertise in AI consulting, software development, and IT security, he helps businesses with their digital transformation.