Developers weigh the hardest LLM app security problems: injection, leakage, MCP
PRINCE9553 · reddit · 2026-07-27
A Reddit poster says they are researching AI application security and want practical lessons from developers building LLM-powered products.
The post highlights recurring pain points: prompt injection, indirect prompt injection, data leakage, RAG security, tool and MCP security, and runtime monitoring. Rather than theory, the author asks which issue has been hardest in production, whether teams built custom defenses or adopted existing tools, and what capability is still missing today.
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