Papers › On the Vulnerability of Concept Erasure in Diffusion Models
On the Vulnerability of Concept Erasure in Diffusion Models
Lucas Beerens, Alex D. Richardson, Kaicheng Zhang, Dongdong Chen
The proliferation of text-to-image diffusion models has raised significant privacy and security concerns, particularly regarding the generation of copyrighted or harmful images. In response, several concept erasure (defense) methods have been developed to prevent the generation of unwanted content through post-hoc finetuning. On the other hand, concept restoration (attack) methods seek to recover supposedly erased concepts via adversarially crafted prompts. However, all existing restoration methods only succeed in the highly restrictive scenario of finding adversarial prompts tailed to some fixed seed. To address this, we introduce RECORD, a novel coordinate-descent-based restoration algorithm that finds adversarial prompts to recover erased concepts independently of the seed. Our extensive experiments demonstrate RECORD consistently outperforms the current restoration methods by up to 17.8 times in this setting. Our findings further reveal the susceptibility of unlearned models to restoration attacks, providing crucial insights into the behavior of unlearned models under the influence of adversarial prompts.
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