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Protecting PII in Elixir Before It Reaches Logs, APIs, and LLMs

Blog post 23 Jul 2026 by hfiguera

I released Obscura 0.1, an Elixir library for detecting and anonymizing PII in plain text and nested structured data.

This practical guide covers protecting application boundaries, Logger metadata, outbound API payloads, structured data, and reversible LLM pseudonymization. It also explains when deterministic detection is sufficient and when local Nx/Bumblebee model-backed recognition is useful.

https://hfiguera.github.io/obscura/blog/protecting-pii-in-elixir/

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