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Add inject-guard-en to Security Tools in LLM Prompt Injection Prevention Cheat Sheet#2129

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Add inject-guard-en to Security Tools in LLM Prompt Injection Prevention Cheat Sheet#2129
DOKASUKA wants to merge 1 commit into
OWASP:masterfrom
DOKASUKA:add-inject-guard-en-tool

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Summary

Adds inject-guard-en to the Security Tools section of the LLM Prompt Injection Prevention Cheat Sheet.

inject-guard-en is a production-ready REST API for detecting prompt injection attacks, with the following characteristics:

  • Context-aware scanning: distinguishes user_input, tool_response, and rag_document contexts — relevant for MCP pipelines and RAG architectures
  • Multi-layer detection: rule-based pattern matching (Layer 1) + embedding similarity (Layer 2)
  • No infrastructure required: SaaS API with a free demo tier (10 checks/day, no API key needed)
  • Covers encoding-based evasion: full-width Unicode bypass, homoglyph substitution, Base64-encoded instructions

AI Usage Declaration

This PR description was drafted with AI assistance (Claude Code).

Related

  • Covers attack types described in this cheat sheet: Direct Injection, Indirect/Remote Injection, Encoding/Obfuscation techniques

@mackowski mackowski closed this Apr 26, 2026
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