Analysis
What Is Prompt Injection? AI Security Risks Explained
Publication date unknown · Discovered guard.io
Page published
Publication date unknown · First observed: 8 Oct 2026
Coverage timeline
Single-source analysis — one report is available.
Why it matters
Prompt injection is ranked the top security risk for LLM applications, and this explainer orients defenders to how hidden instructions can hijack AI assistants and browser tools.
Guardio's Research Team published an explainer defining prompt injection as a class of attack where malicious instructions are slipped into text an AI model processes, covering direct and indirect variants and citing its #1 ranking in the OWASP Top 10 for LLM Applications 2025. The piece illustrates risks in browser assistants, chatbots, and AI-powered apps with illustrative examples.