{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:EIOCCCVXL7V6NXKWZVM6ER43BX","short_pith_number":"pith:EIOCCCVX","schema_version":"1.0","canonical_sha256":"221c210ab75febe6dd56cd59e2479b0ddde4790cdc1d0f203498f97f467369c4","source":{"kind":"arxiv","id":"2608.05036","version":1},"attestation_state":"computed","paper":{"title":"When Do PEFT Adaptations Leak Structure? Measuring Black-Box Structural Bounds in Public-Base Model Services","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"Chun Yang, Gang Shi, Liwei Chen, Shuangshuang Liang, Zhongjiang Yao","submitted_at":"2026-08-05T16:42:59Z","abstract_excerpt":"Services increasingly deploy public foundation models with private parameter-efficient adaptations, creating a differential information leakage risk when auditors or adversaries can execute the public base model locally and observe victim outputs. We present VectorHijack-SR, a measurement methodology that converts paired victim/base residuals into calibrated structural bounds over PEFT family, layer locality, and coarse rank, while separating metadata visibility from open-world validity and operational exploitability. Our estimator aggregates query-level magnitude, ranking, entropy, margin, le"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2608.05036","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2026-08-05T16:42:59Z","cross_cats_sorted":[],"title_canon_sha256":"c6ead4bc4efca747092688438a819b22d7c56b5180a6e29dc4b98c280d890966","abstract_canon_sha256":"cf41d8d530cf513b5762af3e56ce9ff8c8ddbbeab37ea478b451580a513da873"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-06T01:48:05.366727Z","signature_b64":"rH5mwwu5a8OBqldp7urRJnae/4IhZG9ZHKWD/it3I1dY9mjTmXNWMoOpAmgnvNxQarNO/enqDblk21QnDedXCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"221c210ab75febe6dd56cd59e2479b0ddde4790cdc1d0f203498f97f467369c4","last_reissued_at":"2026-08-06T01:48:05.365367Z","signature_status":"signed_v1","first_computed_at":"2026-08-06T01:48:05.365367Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"When Do PEFT Adaptations Leak Structure? Measuring Black-Box Structural Bounds in Public-Base Model Services","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"Chun Yang, Gang Shi, Liwei Chen, Shuangshuang Liang, Zhongjiang Yao","submitted_at":"2026-08-05T16:42:59Z","abstract_excerpt":"Services increasingly deploy public foundation models with private parameter-efficient adaptations, creating a differential information leakage risk when auditors or adversaries can execute the public base model locally and observe victim outputs. We present VectorHijack-SR, a measurement methodology that converts paired victim/base residuals into calibrated structural bounds over PEFT family, layer locality, and coarse rank, while separating metadata visibility from open-world validity and operational exploitability. Our estimator aggregates query-level magnitude, ranking, entropy, margin, le"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.05036","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2608.05036/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2608.05036","created_at":"2026-08-06T01:48:05.367169+00:00"},{"alias_kind":"arxiv_version","alias_value":"2608.05036v1","created_at":"2026-08-06T01:48:05.367169+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.05036","created_at":"2026-08-06T01:48:05.367169+00:00"},{"alias_kind":"pith_short_12","alias_value":"EIOCCCVXL7V6","created_at":"2026-08-06T01:48:05.367169+00:00"},{"alias_kind":"pith_short_16","alias_value":"EIOCCCVXL7V6NXKW","created_at":"2026-08-06T01:48:05.367169+00:00"},{"alias_kind":"pith_short_8","alias_value":"EIOCCCVX","created_at":"2026-08-06T01:48:05.367169+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/EIOCCCVXL7V6NXKWZVM6ER43BX","json":"https://pith.science/pith/EIOCCCVXL7V6NXKWZVM6ER43BX.json","graph_json":"https://pith.science/api/pith-number/EIOCCCVXL7V6NXKWZVM6ER43BX/graph.json","events_json":"https://pith.science/api/pith-number/EIOCCCVXL7V6NXKWZVM6ER43BX/events.json","paper":"https://pith.science/paper/EIOCCCVX"},"agent_actions":{"view_html":"https://pith.science/pith/EIOCCCVXL7V6NXKWZVM6ER43BX","download_json":"https://pith.science/pith/EIOCCCVXL7V6NXKWZVM6ER43BX.json","view_paper":"https://pith.science/paper/EIOCCCVX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2608.05036&json=true","fetch_graph":"https://pith.science/api/pith-number/EIOCCCVXL7V6NXKWZVM6ER43BX/graph.json","fetch_events":"https://pith.science/api/pith-number/EIOCCCVXL7V6NXKWZVM6ER43BX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/EIOCCCVXL7V6NXKWZVM6ER43BX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/EIOCCCVXL7V6NXKWZVM6ER43BX/action/storage_attestation","attest_author":"https://pith.science/pith/EIOCCCVXL7V6NXKWZVM6ER43BX/action/author_attestation","sign_citation":"https://pith.science/pith/EIOCCCVXL7V6NXKWZVM6ER43BX/action/citation_signature","submit_replication":"https://pith.science/pith/EIOCCCVXL7V6NXKWZVM6ER43BX/action/replication_record"}},"created_at":"2026-08-06T01:48:05.367169+00:00","updated_at":"2026-08-06T01:48:05.367169+00:00"}