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Microsoft Presidio

by Microsoft

Open-source PII detection and anonymization framework — detecting 50+ PII entity types in text and images, with APAC-specific extensions for Singapore NRIC, Hong Kong HKID, and other regional identifier formats for LLM data privacy compliance.

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AIMenta verdict
Recommended
5/5

"PII detection and anonymization — APAC AI teams use Microsoft Presidio to detect and redact personally identifiable information from text and images before sending APAC customer data to LLM APIs for privacy-compliant AI processing."

Features
6
Use cases
1
Watch outs
3
What it does

Key features

  • 50+ PII types: names, NRIC, HKID, passport, credit card for APAC detection
  • Custom recognizers: APAC regional ID format extensions (NRIC, HKID, My Number)
  • Anonymization operators: redact, replace, mask, encrypt for APAC PII
  • Image redactor: PII blurring for APAC scanned document pipelines
  • Python/REST API: APAC integration as library or microservice
  • Open-source: MIT licensed for APAC on-premise deployment and customization
When to reach for it

Best for

  • APAC AI teams processing customer data in LLM applications who need PII detection and anonymization before sending data to external APIs — particularly APAC financial services, healthcare, and HR teams building AI applications subject to PDPA, PDPO, and APPI regulations.
Don't get burned

Limitations to know

  • ! APAC-specific ID recognition requires custom recognizer development (not built-in)
  • ! Detection accuracy varies by APAC language — English PII detection stronger than CJK
  • ! Performance overhead for APAC high-throughput text pipelines with large documents
Context

About Microsoft Presidio

Microsoft Presidio is an open-source PII (Personally Identifiable Information) detection and anonymization framework — providing tools to detect, redact, and anonymize sensitive information in text and images before sending APAC data to LLM APIs. APAC AI teams building applications that process customer data use Presidio to ensure PII does not reach external LLM providers in violation of APAC data protection regulations.

Presidio supports 50+ PII entity types out of the box — names, email addresses, phone numbers, credit card numbers, IP addresses, passport numbers, and national IDs. For APAC-specific identifiers, Presidio's custom recognizer framework allows APAC teams to add recognition patterns for Singapore NRIC (S1234567D format), Hong Kong HKID (A123456(7) format), Japanese My Number, Korean National ID, and other regional APAC identifier formats not covered by Presidio's default recognizers.

Presidio's anonymization pipeline replaces detected APAC PII with configurable substitutes — redacting (replacing with [PERSON]), replacing with fake data ("John Smith" → "Jane Doe"), masking ("[email protected]" → "j***@a***.com"), or encrypting (for reversible anonymization). APAC teams sending customer queries to LLMs anonymize PII before the API call and decrypt/de-anonymize after receiving the LLM response.

Presidio Image Redactor extends PII detection to images — APAC teams processing scanned documents (invoices, contracts, ID cards) use Presidio to blur detected PII regions before extracting text via OCR and sending to LLMs. This is critical for APAC document AI pipelines where identity documents or financial statements contain sensitive APAC customer PII.

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