Why it matters

PII protection is compliance requirement. Understanding shapes safe LLM.

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The architecture

Regex: pattern-based.

NER: named entity recognition.

Cloud APIs: GCP DLP, AWS Comprehend.

PII scanner optionsRegexSSN, cards, emailsNERnames, addressesCloud DLPcomprehensiveCloud DLP APIs generally more accurate than regex alone
PII detection options.
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How it works end to end

Regex: catches common patterns.

NER: handles fuzzy PII (names).

Cloud DLP: 100+ categories.

Redaction: replace with placeholder or hash.