--- title: GitHub - danielefrisanco/data_redactor: A Ruby gem with... description: DataRedactor is a Ruby gem with a C extension that scans and redacts sensitive data from strings using a high-performance Thompson NFA → lazy-DFA multi-pattern... canonical: https://daily.dev/posts/github---danielefrisanco-data-redactor-a-ruby-gem-with-a-c-extension-for-scanning-and-redacting-sen-5yunk4uwp twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: GitHub - danielefrisanco/data_redactor: A Ruby gem with a C extension for scanning and redacting sensitive patterns (AWS keys, Italian fiscal codes, passport numbers, etc.) | daily.dev og:description: DataRedactor is a Ruby gem with a C extension that scans and redacts sensitive data from strings using a high-performance Thompson NFA → lazy-DFA multi-pattern... og:url: https://daily.dev/posts/github---danielefrisanco-data-redactor-a-ruby-gem-with-a-c-extension-for-scanning-and-redacting-sen-5yunk4uwp og:image: https://api.daily.dev/og/posts/5YuNk4uwP.png og:image:alt: GitHub - danielefrisanco/data_redactor: A Ruby gem with a C extension for scanning and redacting sensitive patterns (AWS keys, Italian fiscal codes, passport numbers, etc.) og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # GitHub - danielefrisanco/data_redactor: A Ruby gem with a C extension for scanning and redacting sensitive patterns (AWS keys, Italian fiscal codes, passport numbers, etc.) **[Ruby Flow](https://daily.dev/sources/rubyflow)** · 25 min read · 0 upvotes · 0 comments ## Summary DataRedactor is a Ruby gem with a C extension that scans and redacts sensitive data from strings using a high-performance Thompson NFA → lazy-DFA multi-pattern engine (v19). It ships 89 built-in patterns covering cloud/API secrets (AWS, GitHub, Stripe, OpenAI, etc.), IBANs across 18+ countries, national IDs, credit cards, emails, IPs, and more. The engine runs 2–2.5× faster than pure-Ruby gsub in a single O(N) pass. Features include tag/pattern filtering, configurable placeholders, nested Hash/JSON traversal, scan/dry-run mode, custom pattern registration, name-based pattern generation, and optional integrations for Logger, Rails filter_parameters, Rack middleware, RubyLLM, Claude, and OpenAI. Thread-safe with GVL release for large inputs. Precompiled binaries available for Linux (glibc/musl) and macOS. ## Full article daily.dev links to this article rather than hosting it. 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