{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:QD5UX6MK7TM36ZI2XNWMHHU3QB","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"c5061614e4d27feeb52851db476f64a5c3df3c48700ac4b9c779ba26824ee0da","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-06-04T13:57:07Z","title_canon_sha256":"a969170543bb1de449a83ba631f3e4531c6d0e895d269e5629e32ce71402aad1"},"schema_version":"1.0","source":{"id":"2606.06186","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.06186","created_at":"2026-06-05T01:15:36Z"},{"alias_kind":"arxiv_version","alias_value":"2606.06186v1","created_at":"2026-06-05T01:15:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.06186","created_at":"2026-06-05T01:15:36Z"},{"alias_kind":"pith_short_12","alias_value":"QD5UX6MK7TM3","created_at":"2026-06-05T01:15:36Z"},{"alias_kind":"pith_short_16","alias_value":"QD5UX6MK7TM36ZI2","created_at":"2026-06-05T01:15:36Z"},{"alias_kind":"pith_short_8","alias_value":"QD5UX6MK","created_at":"2026-06-05T01:15:36Z"}],"graph_snapshots":[{"event_id":"sha256:4d41ac92705024704b03fa789b6b5e348f5de5da7258f253a012f84ceb08d5dc","target":"graph","created_at":"2026-06-05T01:15:36Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2606.06186/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Vision-Language Models (VLMs), such as CLIP, have shown strong zero-shot generalization but remain highly vulnerable to adversarial perturbations, posing serious risks in real-world applications. Test-time defenses for VLMs have recently emerged as a promising and efficient approach to defend against adversarial attacks without requiring costly large-scale retraining. In this work, we uncover a surprising phenomenon: under diverse input transformations, adversarial images in CLIP's feature space consistently shift along a dominant direction, in contrast to the dispersed patterns of clean image","authors_text":"Jiamin Wu, Liangsheng Liu, Si Chen, Tianzhu Zhang, Weiwei Feng, Wenfei Yang, Xiaotian Yin, Zhixin Cheng","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-06-04T13:57:07Z","title":"Adversarial Attacks Already Tell the Answer: Directional Bias-Guided Test-time Defense for Vision-Language Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.06186","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:cff3593db5688aec7184f58fb88aae60024a0705308a78e1da2ba70759a90bb2","target":"record","created_at":"2026-06-05T01:15:36Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"c5061614e4d27feeb52851db476f64a5c3df3c48700ac4b9c779ba26824ee0da","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-06-04T13:57:07Z","title_canon_sha256":"a969170543bb1de449a83ba631f3e4531c6d0e895d269e5629e32ce71402aad1"},"schema_version":"1.0","source":{"id":"2606.06186","kind":"arxiv","version":1}},"canonical_sha256":"80fb4bf98afcd9bf651abb6cc39e9b805848d5c0c0c4f9bd52e11486bc3601fb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"80fb4bf98afcd9bf651abb6cc39e9b805848d5c0c0c4f9bd52e11486bc3601fb","first_computed_at":"2026-06-05T01:15:36.649179Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-05T01:15:36.649179Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9MLDIrZWf4C6Crql0mhi2rjBtMDwUs1R1IW1au7+Dw+dfb37eVbWQEsd0G3I8IDJaW0x7aIwOm6/0q8u4sFSCA==","signature_status":"signed_v1","signed_at":"2026-06-05T01:15:36.649892Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.06186","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cff3593db5688aec7184f58fb88aae60024a0705308a78e1da2ba70759a90bb2","sha256:4d41ac92705024704b03fa789b6b5e348f5de5da7258f253a012f84ceb08d5dc"],"state_sha256":"3eec6f6b4136329c0dd4becdcb97b69a56737b3bbd2cd1b3fab224ad83842fe5"}