GDPR PII Anonymization for LLMs
Protect sensitive data in AI traffic
When enterprise applications send prompts to LLM providers, those prompts often contain personal data — names, emails, phone numbers, addresses, IBANs. SAIG detects this PII and anonymizes it before it leaves your infrastructure.
How PII detection works
- Hybrid detection — combines Named Entity Recognition (NER) with regex patterns for high recall
- 6 EU languages — English, German, French, Italian, Czech, Slovak
- Entity types — PERSON, EMAIL, PHONE, IBAN, ADDRESS, ID numbers, and more
- Local processing — all PII detection runs locally using on-device NER and regex — no external NLP APIs
Reversible anonymization
SAIG replaces detected PII with stable placeholders ([PERSON_1], [EMAIL_1]) before sending to the LLM provider. After the response returns, original values are restored. The AI model never sees real personal data, but the end user gets a natural response.
Outbound verification
Before any request leaves for the LLM provider, SAIG performs final outbound PII verification to confirm anonymization was applied correctly.
GDPR workflow support
SAIG supports GDPR workflows through PII detection, anonymization, data minimization patterns, and audit evidence. It does not replace legal counsel or guarantee GDPR compliance.
SAIG provides runtime controls, policy enforcement, audit evidence, and compliance-supporting workflows. It does not constitute legal advice, certification, or a guarantee of regulatory compliance.
Frequently Asked Questions
Does SAIG detect all PII?
SAIG uses hybrid NER and regex detection across 6 EU languages. Detection coverage depends on entity type, language, and content structure. No PII detection system guarantees 100% recall.
Is PII processed locally?
Yes. All PII detection runs locally using on-device NER and regex — no external NLP APIs.
Can anonymization be reversed?
Yes. SAIG uses reversible anonymization with stable placeholders. Original values are restored in the response after the LLM provider returns its output.
Does SAIG guarantee GDPR compliance?
No. SAIG supports GDPR workflows through PII detection, anonymization, and audit evidence, but it does not replace legal counsel or guarantee regulatory compliance.