Modeling per-token loss correlations with a multivariate Gaussian improves LiRA membership inference on sequence models, often by an order of magnitude in TPR at low FPR.
Membership inference attacks from first principles,
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Membership Inference Attacks on Sequence Models
Modeling per-token loss correlations with a multivariate Gaussian improves LiRA membership inference on sequence models, often by an order of magnitude in TPR at low FPR.