Prompt Injection and PII: How I Built Guardrails in LangGraph
This story is from 2026-10-25. It is preserved in the archive; the latest stories are on the live feed.
This article is for AI developers who want to protect their RAG system against prompt injection and leaks of personal data (PII). There are three problems. First, personal data like email addresses or IBANs is sent to the model provider and ends up in your logs. Second, a malicious prompt can make…
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- 2026-10-25 15:43 · DEV Community — AI
Prompt Injection and PII: How I Built Guardrails in LangGraph