Hugging Face model: shiqiangchen6/prompt-injection
Author: shiqiangchen6
Created: 2026-07-15 06:15:15
Last modified: 2026-07-15 06:38:33
Likes: 0 | Downloads: 0
Tags: prompt-injection, mcp-security, tool-security, ai-safety, input-validation, license:apache-2.0, region:us
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title: Prompt Injection is Not an AI Problem: Why MCP Tool Hardening Matters
authors: name: Shiqiang Chen
affiliation: Independent Researcher
abstract: Prompt injection has been widely framed as a language model safety problem, with solutions focused on input filtering, alignment training, and guardrail models. This paper argues that this framing is fundamentally incomplete. Through an analysis of MCP (Model Context Protocol) tool interactions, we demonstrate that prompt injection is primarily a tool security and input sanitization problem, not an AI alignment one. We show how seemingly benign tool integrations create injection vectors that bypass LLaMA-based guardrails, and we propose a principle-based approach to MCP tool hardening: validate at the boundary, not the model. Our findings suggest that the AI security community needs to shift its focus from model-level defenses to protocol-level tool security.

tags: prompt-injection, mcp-security, tool-security, ai-safety, input-validation
license: apache-2.0