# Systematic Multi-Layer Audit System Bypass

- **Severity:** Critical
- **Signature ID:** `220541b8-1de2-4dcc-ab81-7848e3db63c7`
- **MITRE ATLAS:** AML.T0051 (LLM Prompt Injection)
- **OWASP:** ASI01 (Agent Authorization and Control Hijacking), LLM01 (Prompt Injection)

## Summary

Some AI agent platforms review submitted code or plugins through several checkpoints in a row — checking the manifest, permissions, dependencies, code, and intent. This rule flags text that shows someone deliberately targeting each of those checkpoints one at a time, or looking for gaps between them, to sneak malicious functionality through the whole pipeline.

## How the attack works

An attacker studies how a multi-stage audit pipeline works and identifies its separate checks — manifest validation, permission review, dependency scanning, code analysis, and semantic/intent review. They then craft a payload that looks clean to each individual check, for example declaring safe-looking permissions while hiding functionality that only becomes malicious after later stages, or timing a change so it lands in the gap between two checks. The goal is to have the full submission approved even though no single stage would pass it if it saw the whole picture. This is a technique for defeating the audit process itself, not a specific exploit against one vulnerability.

## Why it matters

If successful, malicious code or a malicious agent/plugin gets approved and deployed as if it were trustworthy, bypassing the safeguards meant to catch exactly this kind of submission. This can let harmful capabilities into a production environment undetected.

## What you can do

- Ensure audit stages share full context rather than each reviewing an isolated slice of the submission — a payload that looks safe at each individual check can still be malicious as a whole.
- Add a final holistic review step that re-examines the combined effect of manifest, permissions, dependencies, and code together, not just each layer in isolation.
- Log and correlate submissions that are resubmitted or modified between audit stages, since that pattern can indicate probing for gaps.
- Treat write-ups of audit bypass techniques from red-team or academic sources as expected false positives, but review actual submission pipelines for the same reasoning described.

## Known benign look-alikes

- Security engineers discussing audit bypass techniques in a red team context
- Penetration testing documentation that describes audit layer enumeration techniques for red team exercises
- Academic paper discussing the theoretical weaknesses of multi-stage software supply chain audit systems

## References

- https://agentthreatrule.org/en/rules/ATR-2026-00094

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Source: https://www.netzilo.com/threats/atr-systematic-multi-layer-audit-system-bypass