Evaluating cancer prevention programs requires collecting and linking data on a case specific level from multiple sources of the healthcare system. Therefore, one has to comply with data protection regulations which are restrictive in Germany and will likely become stricter in Europe in general.
This research paper examines a critical privacy challenge related to LINKABILITY — the ability to connect two pieces of information to the same person.
anonym.legal addresses this through 260+ entity types with 3-layer hybrid detection accessible via 6 platforms including Chrome Extension for real-time browser anonymization.
The ability to connect two pieces of information to the same person. This is the foundational operation that makes PII dangerous. Nearly every pain point is an expression of linkability being created, exploited, or failing to be broken.
Irreducible truth: You cannot have useful data that is completely unlinkable AND completely useful. The very features that make data informative make it linkable. This is not a bug — it is information theory. The information content of a dataset and its linkability are the same property measured differently.
anonym.legal identifies 260+ entity types including names, addresses, financial records, purchase history, app usage data, credit information. The 3-layer hybrid (Presidio + NLP + Stance classification) architecture uses Microsoft Presidio deterministic rules with checksum validations (Luhn, RFC-822) for structured identifiers and XLM-RoBERTa + Stanza NER with Stance classification for disambiguation for contextual references.
Redact is recommended for this pain point: removing identifiers before data leaves organizational boundaries prevents contribution to cross-source aggregation profiles. Hash provides an alternative — hashing identifiers enables internal analytics while preventing external parties from matching records. For scenarios requiring reversibility, Encrypt (AES-256-GCM) enables authorized recovery of original values.
The REST API (Basic plan+, €3/month) provides programmatic PII detection with Bearer token auth. Rate limited to 100 req/min, max 100 KB per request — the most accessible API entry point in the ecosystem.
This pain point intersects with GDPR Article 5(1)(b) purpose limitation, Article 5(1)(c) minimization, CCPA opt-out rights.
anonym.legal’s GDPR, HIPAA, PCI-DSS, ISO 27001 compliance coverage, combined with Hetzner Germany, ISO 27001 certified hosting, provides documented technical measures organizations can reference in their compliance documentation and regulatory submissions.
| Specification | Value |
|---|---|
| Platform Version | v7.4.4 |
| Entity Types | 260+ |
| Detection Layers | 3-layer: Presidio + NLP + Stance classification |
| Accuracy | 95.5% tested (42/44 tests) |
| Languages | 48 |
| Anonymization Methods | Replace, Redact, Mask, Hash (SHA-256/512/MD5), Encrypt (AES-256-GCM) |
| Platforms | Web App, Desktop, Office Add-in, MCP Server, Chrome Extension, REST API |
| Pricing | Free €0, Basic €3, Pro €15, Business €29 |
| Hosting | Hetzner Germany, ISO 27001 |
| Compliance | GDPR, HIPAA, PCI-DSS, ISO 27001 |