Three Attack Surfaces, Infinite Threats: The Complete LLM Threat Model

LLM applications face three distinct attack surfaces—confidentiality, integrity, and availability—each with documented exploitation techniques across OpenAI, Microsoft, Anthropic, and Google platforms. This framework leverages OWASP LLM Top 10 and MITRE ATLAS taxonomies to systematically defend production systems against prompt injection, data exfiltration, and integrity attacks, moving beyond reactive patching to proactive threat modeling.