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Sleeper Payload Injection

๐Ÿ”ด CRITICAL memory proven_mitigated AVE-2025-0001

ยท aka: Memory Poisoning, Delayed Payload Injection

Summary

Attacker plants false facts in shared agent memory. The agent stores them as trusted ground truth. Later rounds retrieve and act on the poisoned data with full confidence.

Blast Radius

Complete corruption of agent knowledge base. All downstream decisions tainted.

Prerequisites

Agent must have writable shared memory or persistent state.

Environment

  • Frameworks: LangGraph
  • Models tested: [Available in NAIL SDK]
  • Multi-agent: Yes
  • Tools required: No
  • Memory required: Yes

Known Defences

  • Memory Firewall (Archivist) โ€” layer

๐Ÿ”’ Full defence implementations available through the NAIL SDK.

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