{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:CWWTYX2WOWTVCBXXTDSUIZWXAI","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":"e5e97f4ed32a6c1909fb493bf035bddee9ded077af8475c30ca5716f57e488e6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2026-02-06T06:02:57Z","title_canon_sha256":"2a624cddb916973c0a882e3f97748f30d2f283089d8a589620226159d385b358"},"schema_version":"1.0","source":{"id":"2602.06409","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2602.06409","created_at":"2026-07-22T01:22:19Z"},{"alias_kind":"arxiv_version","alias_value":"2602.06409v2","created_at":"2026-07-22T01:22:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2602.06409","created_at":"2026-07-22T01:22:19Z"},{"alias_kind":"pith_short_12","alias_value":"CWWTYX2WOWTV","created_at":"2026-07-22T01:22:19Z"},{"alias_kind":"pith_short_16","alias_value":"CWWTYX2WOWTVCBXX","created_at":"2026-07-22T01:22:19Z"},{"alias_kind":"pith_short_8","alias_value":"CWWTYX2W","created_at":"2026-07-22T01:22:19Z"}],"graph_snapshots":[{"event_id":"sha256:10eaaf8061378e099d93284766818c25b051265d1a82eab730ef72efcecdd255","target":"graph","created_at":"2026-07-22T01:22:19Z","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/2602.06409/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Multimodal large language models (MLLMs) are pushing recommender systems (RecSys) toward content-grounded retrieval and ranking via cross-modal fusion. We find that while cross-modal consensus often mitigates conventional poisoning that manipulates interaction logs or perturbs a single modality, it also introduces a new attack surface where synchronised multimodal poisoning can reliably steer fused representations along stable semantic directions during fine-tuning. To characterise this threat, we formalise cross-modal interactive poisoning and propose VENOMREC, which performs Exposure Alignme","authors_text":"Cyril Leung, Fuyao Zhang, Guowei Guan, Jiaming Zhang, Longtao Huang, Tiantong Wu, Tianxiang Chen, Wei Yang Bryan Lim, Yurong Hao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2026-02-06T06:02:57Z","title":"VENOMREC: Cross-Modal Interactive Poisoning for Targeted Promotion in Multimodal LLM Recommender Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2602.06409","kind":"arxiv","version":2},"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":"sha256:66d2a57f15bb63d109f34cf5b8d92408166b327a13a1484a645d5688bd41318d","target":"record","created_at":"2026-07-22T01:22:19Z","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":"e5e97f4ed32a6c1909fb493bf035bddee9ded077af8475c30ca5716f57e488e6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2026-02-06T06:02:57Z","title_canon_sha256":"2a624cddb916973c0a882e3f97748f30d2f283089d8a589620226159d385b358"},"schema_version":"1.0","source":{"id":"2602.06409","kind":"arxiv","version":2}},"canonical_sha256":"15ad3c5f5675a75106f798e54466d7022239723ffdeff376cb23f982a08c7602","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"15ad3c5f5675a75106f798e54466d7022239723ffdeff376cb23f982a08c7602","first_computed_at":"2026-07-22T01:22:19.973404Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-22T01:22:19.973404Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DsNKyyAvV63SUBEokGHaq/OT4Ox64WoEIaFklmXCJhobKLD2GdMZNTXnFqxWKd9szucS5PBSfb4VKcLAOiV+CA==","signature_status":"signed_v1","signed_at":"2026-07-22T01:22:19.974446Z","signed_message":"canonical_sha256_bytes"},"source_id":"2602.06409","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:66d2a57f15bb63d109f34cf5b8d92408166b327a13a1484a645d5688bd41318d","sha256:10eaaf8061378e099d93284766818c25b051265d1a82eab730ef72efcecdd255"],"state_sha256":"2dcd67a09cd46b9da27ba51a80efed8538eaea8f3078ca1c9abd35949033024f"}