GDPR Compliance Checker

Check SSL/TLS GDPR compliance for personal data protection

About GDPR Compliance

The GDPR (General Data Protection Regulation) requires organizations to implement appropriate technical measures to protect personal data, including encryption of data in transit via TLS/SSL. Our GDPR Compliance Checker evaluates your server's TLS configuration against Article 32 requirements, checking for modern protocols, strong cipher suites, and proper certificate validation to ensure your encryption meets regulatory standards.

How to Use

Enter the domain name of the server you want to check for GDPR compliance.
Click Check Compliance to begin the automated scan.
Review the overall compliance score and individual check results.
Address any failed checks flagged as High or Medium severity to improve compliance.

Use Cases

Regulatory Audits: Prepare for GDPR audits by verifying your TLS encryption meets Article 32 requirements.
Security Assessments: Evaluate third-party vendors and partners for GDPR-compliant data transmission.
Compliance Monitoring: Regularly check that your infrastructure maintains GDPR-level encryption as standards evolve.
Remediation Planning: Identify specific TLS configuration weaknesses that need attention for full compliance.

Frequently Asked Questions

Article 32 of the GDPR requires organizations to implement appropriate technical measures to ensure a level of security appropriate to the risk, including the encryption of personal data in transit. This means using modern TLS protocols and strong cipher suites.

GDPR does not mandate a specific TLS version, but industry best practice requires TLS 1.2 or higher. TLS 1.0 and 1.1 are deprecated due to known vulnerabilities and should not be used for protecting personal data.

You should check TLS compliance quarterly or whenever you make changes to your server configuration. Regular monitoring helps ensure ongoing compliance as security standards and regulatory expectations evolve.

No, and no tool could. This page checks transport encryption, which is one requirement under Article 32. The great majority of GDPR concerns lawful basis for processing, data minimisation, retention schedules, subject rights, processor agreements and breach procedures — none of which any external scan can verify. Treat this as the technical transport subset that happens to be machine-checkable.

Because encryption only protects data if it is actually used. Without HSTS, a first visit can be intercepted before any redirect to HTTPS, and the browser has no instruction to require encryption. HSTS removes that window by telling browsers to go straight to HTTPS for subsequent visits, which is what makes the protection continuous rather than dependent on the user or the first request succeeding.

Any AEAD suite — AES-GCM or ChaCha20-Poly1305 — with ephemeral key exchange, under TLS 1.2 or 1.3. Those provide authenticated encryption, so data cannot be altered in transit without detection. Suites with RC4, DES or NULL either have known weaknesses or provide no confidentiality at all, which is why they are flagged as high severity here.

TLS 1.2 with a modern AEAD suite is adequate for transport protection. TLS 1.3 is better on several axes — it removes problematic constructions, completes in fewer round trips, and cannot be downgraded to an older version by an attacker. If you are choosing, enable 1.3 and keep 1.2 for clients that need it, which is the configuration almost every page on this site checks for.

Everything this page cannot: where personal data is stored and whether it is encrypted at rest, how long it is kept, who can access it, what happens on a breach, and whether processors are contractually bound. For transport specifically, also confirm that internal service-to-service calls use TLS — database traffic is a common gap, and the database checker on this site covers it.

What the Check Covers

GDPR has no TLS-specific article, but Article 32 requires appropriate technical measures for data in transit. This page tests that narrow slice against a live connection and an HTTP request.

1TLS encryption: the negotiated version must be 1.2 or better, since anything older is not considered appropriate protection for personal data. The version is read from a live handshake rather than assumed.
2Cipher strength: RC4, DES, NULL and export suites are flagged as exposing personal data in transit. The check is on what was negotiated, which is what your users actually receive.
3Certificate validity and HSTS: an expired certificate exposes data by removing the protection entirely, and a missing HSTS header leaves users open to a downgrade. Both are fetched and checked.

The result separates high-severity failures from medium warnings and reports a pass count across the checks performed. What this cannot cover is the large majority of GDPR: lawful basis, data minimisation, retention, subject rights and processor agreements. Transport encryption is the part a scan can honestly assess.

Tips & Best Practices

•Verify TLS configuration meets GDPR data protection requirements
•Use strong encryption to protect personal data in transit
•Document TLS security measures for GDPR compliance evidence
•Monitor TLS configuration for ongoing GDPR compliance

Technical Details

Regulation: General Data Protection Regulation (GDPR) compliance checks
Requirements: Data protection in transit, encryption, and security measures
Audit: TLS configuration compliance assessment
Output: GDPR compliance status with remediation recommendations