Prompt Injection Explained 2026 | AI Security, AI Agents, MCP, Copilot, EchoLeak & LLM Cybersecurity

Prompt injection and AI security in 2026: learn how AI agents, MCP, Copilot and LLMs get hijacked, including EchoLeak, real attacks, AI risks and defenses. Understand prompt injection attacks against AI systems, how malicious instructions can manipulate LLMs and connected tools, and why prompt injection is a major security concern for RAG and agentic AI applications.