5 Dangerous Myths Backend Engineers Still Believe About MCP Server Security That Are Silently Exposing Multi-Tenant AI Agent Pipelines to Privilege Escalation Attacks in 2026

The Model Context Protocol (MCP) has rapidly become the connective tissue of the modern AI agent ecosystem. Since Anthropic introduced the open standard in late 2024, adoption has exploded across enterprise platforms, developer toolchains, and production-grade agentic pipelines. By early 2026, thousands of companies are running MCP servers in multi-tenant