# LoBAM: LoRA-Based Backdoor Attack on Model Merging

**Source:** https://arxiv.org/abs/2411.16746  
**Authors or institution:** Ming Yin, Jingyang Zhang, Jingwei Sun, Minghong Fang, Hai Li, Yiran Chen  
**Publication date:** 2024-11-23  
**Publication status:** arXiv preprint  
**Evidence level:** Emerging evidence  
**Date last reviewed in UTC:** 2026-06-26T00:00:00Z

## Direct findings or source content

Low-rank adapter workflows can be relevant to model-merging supply-chain risk.

## Cognivirus interpretation

For Cognivirus.com, this source is used to examine risk at the level of adaptive systems, component compositions, evaluator boundaries, and behavioral persistence. The site interpretation is narrower than the source when the source is experimental, and more explicitly qualified when the source is architectural or programmatic.

## Limits

Preprint and attack-specific assumptions; operational defenses not exhausted. That all LoRA contributions are malicious or that adapter use should be abandoned.

## Source handling

This local file is an original summary and metadata record. It is not a copy of the source paper, report, or website. Copyrighted source material is not reproduced in full.