Analysis
Prompt Injection: The 2026 Enterprise Defense Playbook
First reported · Discovered accuroai.co
Page published
Earliest dated coverage: 2 Apr 2026 · First observed: 14 Oct 2026 · Latest dated coverage: 2 Apr 2026
Coverage timeline
Single-source analysis — one report is available.
Why it matters
Prompt injection against production LLM agents is ranked first on OWASP's Top 10, and this playbook consolidates the attack surfaces and standards-based controls a defender needs to bound its damage.
"Prompt Injection: The 2026 Enterprise Defense Playbook" is a reference guide synthesizing the direct vs. indirect prompt-injection taxonomy, the four 2026 agent attack surfaces (RAG poisoning, MCP tool descriptors, long-lived agent memory, and agent-to-agent handoffs), four defense layers, and standards from OWASP, NIST, ISO 42001, Germany's BSI, ETSI EN 304 223, and the UK code of practice. The piece frames prompt injection as a supply-chain vector against production AI agents and recommends treating every token entering a model's context as untrusted.