Prompt injection in AI apps: what security teams need to fix

TL;DR: Prompt injection exploits how language models mix instructions, data, memory, and tool execution, creating real-world bypasses in chatbots, retrieval pipelines, and autonomous workflows, according to Lasso Security. The core risk is architectural: when systems collapse trust boundaries, traditional perimeter controls cannot reliably tell content from control.

NHIMG editorial — based on content published by Lasso Security: Prompt Injection Examples That Expose Real AI Security Risks

Questions worth separating out

Q: How should security teams stop prompt injection from affecting AI workflows?

A: Start by isolating instructions from untrusted data so retrieved content cannot rewrite system intent.

Q: Why do prompt injection attacks bypass many AI guardrails?

A: Because many guardrails inspect input or output in isolation, while the attack succeeds in the middle of the execution path.

Q: What breaks when AI agents can call tools after reading untrusted content?

A: The system stops being a text processor and becomes an execution surface.

Practitioner guidance

• Separate instruction and data channels Redesign prompts so system instructions, user input, retrieved content, and memory are isolated and cannot silently modify one another.
• Validate provenance before retrieval is trusted Tag retrieved content by source, age, and trust level, then block untrusted material from influencing operational decisions, tool calls, or policy-sensitive responses.
• Require verification before model-driven actions Treat model output as advisory until a second control confirms the action, especially for data access, workflow changes, and privileged tool execution.

What's in the full article

Lasso Security's full blog post covers the operational detail this post intentionally leaves for the source:

• Specific attack examples across Bing Chat, RAG pipelines, Copilot, and autonomous coding tools
• Detailed detection patterns for hidden instructions, multi-turn attacks, and tool misuse
• Product-specific runtime control examples and how the vendor structures policy enforcement
• Testing scenarios that mirror real production deployments rather than static prompt checks

👉 Read Lasso Security's analysis of prompt injection examples in AI systems →

Prompt injection in AI apps: what security teams need to fix?

Explore further

View Full Forum →  |  NHI Foundation Course →