LLM - rf.blog

AI Security Open Source ShieldX ShieldY LLM Prompt Injection Security MITRE ATLAS Red Team TypeScript

The Open Source AI Security Stack That Actually Exists

Vendor solutions for LLM security cost $50,000/year and scan for yesterday's attacks. The open source stack is fragmented but works. Here's what actually exists — and what's still missing.

Rene Fichtmueller / 2026-05-23 / ~2 min read min read

RAG LLM Production AI Embeddings Vector Database Qdrant AI Engineering Chunking Retrieval OpenAI

Why Your RAG Pipeline Fails in Production

Tutorials show RAG working at 95% recall on toy datasets. Production systems hit 60%. The gap isn't the technology — it's three implementation choices that look harmless and aren't.

Rene Fichtmueller / 2026-05-20 / ~2 min read min read

MCP Security LLM AI Security Prompt Injection ShieldX MITRE ATLAS Tool Poisoning Claude Open Source

MCP Security: The Attack Surface Nobody Is Auditing

Model Context Protocol gives AI systems tool access. It also creates a new attack surface: tool poisoning, indirect prompt injection, and privilege escalation through tool chaining. Almost nobody is scanning for it.

Rene Fichtmueller / 2026-05-19 / ~2 min read min read

AI Software Engineering Local LLM Build in Public LLM CostEfficiency RapidDevelopment

What I Built in 30 Days With My Local LLM Stack

In 30 days, I built over 20 production projects using my local AI model stack, achieving what would have taken months with traditional methods.

Rene Fichtmueller / 2026-04-10 / ~2 min read min read

Open Source Security AI LLM ShieldX Prompt Injection Self-Learning Kill Chain MITRE ATLAS MCP Guard TypeScript

ShieldX: Why Prompt Injection Defense Needs to Evolve Itself

500+ detection patterns. 10-layer pipeline. Kill chain mapping. And it learns from every attack it sees.

Rene Fichtmueller / 2026-04-05 / ~2 min read min read