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Compare PII detection methods, regex, entropy, NER, external APIs. Why can't regex alone find a person's name?

A deceptively simple screener: each detection method maps to a PII class, and the 'why not regex for names' sub-question has a precise answer about structure vs context that interviewers use as the pass bar.

Updated Aug 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.

A deceptively simple screener: each detection method maps to a PII class, and the 'why not regex for names' sub-question has a precise answer about structure vs context that interviewers use as the pass bar.

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