{"data":{"id":"49a2c82a-f32b-4866-ae77-807f41e97ca5","title":"Cutpurse: Decomposing Explanation-Guided Model Extraction on Tabular Data","summary":"Researchers examined whether explanation APIs for tabular classifiers help model extraction, separating attribution rankings from the bin-edge coordinates they supply. They found attribution gives no systematic advantage, and default Lime bin edges are quantiles of the explainer's background data rather than target-model properties. Their attack, Cutpurse, improves fidelity by 16.3 percentage points when bin edges are withheld, exceeding the undefended published attack by 7.0 points.","solution":"N/A -- no mitigation discussed in source.","labels":["security","research"],"sourceUrl":"https://arxiv.org/abs/2611.09375v1","publishedAt":"2026-11-06T12:15:21.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":["model_theft"],"issueType":"research","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":[],"affectedVendorsRaw":["Lime","Shap"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":null,"headlinePromptVersion":null,"cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"epssCheckedAt":null,"kevDateAdded":null,"advisoryAliases":null,"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":null,"disclosureDate":"2026-11-06T12:15:21.000Z","fixReleasedAt":null,"daysToFix":null,"fixCheckedAt":null,"capecIds":null,"crossRefCount":0,"attackSophistication":"advanced","impactType":["confidentiality"],"aiComponentTargeted":"api","llmSpecific":false,"classifierConfidence":0.93,"researchCategory":"preprint","atlasIds":null}}