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n8n: Guardrails in Action — Testing PII Anonymization

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  • n8n: Guardrails in Action — Testing PII Anonymization
n8n: Guardrails in Action — Testing PII Anonymization

By Piotr Sikora

  • n8n

  • 24 March 2026

  • 1 min read

Table of Contents

  • What I test
  • What you will learn
  • Watch the episode

More and more law firms and legal departments are adopting AI tools. The key question is: how do you pass data to AI models safely, without violating GDPR?

In this episode I put the Guardrails node in n8n through practical tests on data typical for legal work.

What I test

  • Email addresses and phone numbers in real-looking correspondence.
  • Payment card numbers and IBAN bank account numbers.
  • How reliably Guardrails masks each category of personal data (PII).

What you will learn

  • How to configure the Guardrails node for PII anonymization.
  • Which data categories it handles well and where you need extra care.
  • How to build a safety layer in front of an LLM in your workflow.

Watch the episode

The video is available on YouTube: youtube.com/watch?v=-bBkwjAIHmo.

All episodes are collected on the Automation Academy page (in Polish). Subscribe to my YouTube channel so you do not miss new material.

The video is in Polish; this post summarizes what it covers.

Tags:

    #n8n

    #youtube

    #n8n best practices

    #guardrails

    #n8n security

    #llm security

    #ai security

    #openai

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About Me

Piotr Sikora - Process Automation | AI | n8n | Python | JavaScript

Piotr Sikora

Process Automation Specialist

I implement automation that saves time and money, streamlines operations, and increases the predictability of results. Specializing in process automation, AI implementation, and workflow optimization using n8n, Python, and JavaScript.

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