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7/18/2026
The original title is "Indirect Prompt Injection in 2026: Scale, Real-World Cases, and Defense Layers"

The original title is "Indirect Prompt Injection in 2026: Scale, Real-World Cases, and Defense Layers"

Original: Death by Poisoning: Your Agent Read a Comment and Started Helping Your Competitor

Short summary

Indirect Prompt Injection (IPI) is now OWASP's #1 LLM vulnerability, with 1.2M+ infected web pages growing at 32%. Attackers embed hidden instructions in content agents read, turning them into insider threats with full API access. The article covers real-world cases like EchoLeak (CVE-2025-32711) affecting 100K+ users, MCP poisoning risks, and a three-layer defense framework: Identify, Isolate, Immunize.

  • •IPI affects 1.2M+ web pages at 32% growth — agents get hijacked by reading 'safe' content
  • •EchoLeak CVE-2025-32711 let attackers exfiltrate data via Microsoft 365 Copilot through a single email
  • •Defense requires input sanitization, context isolation, and behavioral immunization across agent pipelines

Generated with AI, which can make mistakes.

#ai-agents#ai-tools#industry-adoption
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