Adversarial Attacks in Weight-Space Classifiers

TMLR Paper6533 Authors

17 Nov 2025 (modified: 19 Nov 2025)Under review for TMLREveryoneRevisionsBibTeXCC BY 4.0
Abstract: Implicit Neural Representations (INRs) have been recently garnering increasing interest in various research fields, mainly due to their ability to represent large, complex data in a compact and continuous manner. Past work further showed that numerous popular downstream tasks can be performed directly in the INR parameter-space. Doing so can substantially reduce the computational resources required to process the represented data in their native domain. A major difficulty in using modern machine-learning approaches, is their high susceptibility to adversarial attacks, which have been shown to greatly limit the reliability and applicability of such methods in a wide range of settings. In this work, we show that parameter-space models trained for classification are inherently robust to adversarial attacks – without the need of any robust training. To support our claims, we develop a novel suite of adversarial attacks targeting parameter-space classifiers, and furthermore analyze practical considerations of such attacks.
Submission Type: Regular submission (no more than 12 pages of main content)
Assigned Action Editor: ~Guillermo_Ortiz-Jimenez1
Submission Number: 6533
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