{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:ECWFIHNPRIETOMGW2LBBR4YA3E","short_pith_number":"pith:ECWFIHNP","canonical_record":{"source":{"id":"2607.13987","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2026-07-15T16:15:46Z","cross_cats_sorted":[],"title_canon_sha256":"fc7d059b9a10345016310c78aca88e8f7bc046e4145753036463a0d7fb634e6a","abstract_canon_sha256":"bc4453f5072b2df78ff77755ef7858a098f12f79664bc27add1681a357d0afeb"},"schema_version":"1.0"},"canonical_sha256":"20ac541daf8a093730d6d2c218f300d92823a036fddd2dd49e94346c298235ea","source":{"kind":"arxiv","id":"2607.13987","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.13987","created_at":"2026-07-16T01:23:18Z"},{"alias_kind":"arxiv_version","alias_value":"2607.13987v1","created_at":"2026-07-16T01:23:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.13987","created_at":"2026-07-16T01:23:18Z"},{"alias_kind":"pith_short_12","alias_value":"ECWFIHNPRIET","created_at":"2026-07-16T01:23:18Z"},{"alias_kind":"pith_short_16","alias_value":"ECWFIHNPRIETOMGW","created_at":"2026-07-16T01:23:18Z"},{"alias_kind":"pith_short_8","alias_value":"ECWFIHNP","created_at":"2026-07-16T01:23:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:ECWFIHNPRIETOMGW2LBBR4YA3E","target":"record","payload":{"canonical_record":{"source":{"id":"2607.13987","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2026-07-15T16:15:46Z","cross_cats_sorted":[],"title_canon_sha256":"fc7d059b9a10345016310c78aca88e8f7bc046e4145753036463a0d7fb634e6a","abstract_canon_sha256":"bc4453f5072b2df78ff77755ef7858a098f12f79664bc27add1681a357d0afeb"},"schema_version":"1.0"},"canonical_sha256":"20ac541daf8a093730d6d2c218f300d92823a036fddd2dd49e94346c298235ea","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-16T01:23:18.093708Z","signature_b64":"Jkpu+XoDzxB9DCWO5UGFS57SKFDTKPdoYp1Fm2+H0EHVyb5UiOQnKfkjGZ8URe/YNGd73rVS9NIzx14CTYoJAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"20ac541daf8a093730d6d2c218f300d92823a036fddd2dd49e94346c298235ea","last_reissued_at":"2026-07-16T01:23:18.092837Z","signature_status":"signed_v1","first_computed_at":"2026-07-16T01:23:18.092837Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.13987","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-16T01:23:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IiiO5jHdPhTGGv+1isty8MmE80XD9s/ccryWoJ2DXAB6ImBbl9dV3XQ/R/8f/vtP1rdrpPHWOeS0CXOjKLTwCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T01:12:05.695219Z"},"content_sha256":"89fec3a469877f875d167328ef3f7e517b193903080ff7757a98de50312b337e","schema_version":"1.0","event_id":"sha256:89fec3a469877f875d167328ef3f7e517b193903080ff7757a98de50312b337e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:ECWFIHNPRIETOMGW2LBBR4YA3E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Agent Skill Security: Threat Models, Attacks, Defenses, and Evaluation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"Priyanka Tiwari, Sanket Badhe","submitted_at":"2026-07-15T16:15:46Z","abstract_excerpt":"Reusable skills are becoming a fundamental building block of Large Language Model (LLM) agents, enabling capabilities to be packaged, shared, and reused across diverse applications. However, existing security research primarily focuses on prompt injection and runtime execution, leaving security risks throughout the broader skill lifecycle largely unexplored. In this paper, we present SkillSec-Eval, a lifecycle-aware framework for systematically evaluating the security of reusable agent skills. We first characterize the skill lifecycle and develop a threat taxonomy spanning repository admission"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.13987","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/2607.13987/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-16T01:23:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kDaCukx5mUnlb8u5bcUYHbdBwn6lBU40AmDNTnLvueVSzlX22d+UxmQMRLLYmdd6fZRyGG83y/ozDF6NAhFrCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T01:12:05.695848Z"},"content_sha256":"2dd67ae9f999b34705dfa536a0ef88a5c2e718833a7eca7c2fd751f638745059","schema_version":"1.0","event_id":"sha256:2dd67ae9f999b34705dfa536a0ef88a5c2e718833a7eca7c2fd751f638745059"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ECWFIHNPRIETOMGW2LBBR4YA3E/bundle.json","state_url":"https://pith.science/pith/ECWFIHNPRIETOMGW2LBBR4YA3E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ECWFIHNPRIETOMGW2LBBR4YA3E/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-21T01:12:05Z","links":{"resolver":"https://pith.science/pith/ECWFIHNPRIETOMGW2LBBR4YA3E","bundle":"https://pith.science/pith/ECWFIHNPRIETOMGW2LBBR4YA3E/bundle.json","state":"https://pith.science/pith/ECWFIHNPRIETOMGW2LBBR4YA3E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ECWFIHNPRIETOMGW2LBBR4YA3E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:ECWFIHNPRIETOMGW2LBBR4YA3E","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":"bc4453f5072b2df78ff77755ef7858a098f12f79664bc27add1681a357d0afeb","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2026-07-15T16:15:46Z","title_canon_sha256":"fc7d059b9a10345016310c78aca88e8f7bc046e4145753036463a0d7fb634e6a"},"schema_version":"1.0","source":{"id":"2607.13987","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.13987","created_at":"2026-07-16T01:23:18Z"},{"alias_kind":"arxiv_version","alias_value":"2607.13987v1","created_at":"2026-07-16T01:23:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.13987","created_at":"2026-07-16T01:23:18Z"},{"alias_kind":"pith_short_12","alias_value":"ECWFIHNPRIET","created_at":"2026-07-16T01:23:18Z"},{"alias_kind":"pith_short_16","alias_value":"ECWFIHNPRIETOMGW","created_at":"2026-07-16T01:23:18Z"},{"alias_kind":"pith_short_8","alias_value":"ECWFIHNP","created_at":"2026-07-16T01:23:18Z"}],"graph_snapshots":[{"event_id":"sha256:2dd67ae9f999b34705dfa536a0ef88a5c2e718833a7eca7c2fd751f638745059","target":"graph","created_at":"2026-07-16T01:23:18Z","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/2607.13987/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Reusable skills are becoming a fundamental building block of Large Language Model (LLM) agents, enabling capabilities to be packaged, shared, and reused across diverse applications. However, existing security research primarily focuses on prompt injection and runtime execution, leaving security risks throughout the broader skill lifecycle largely unexplored. In this paper, we present SkillSec-Eval, a lifecycle-aware framework for systematically evaluating the security of reusable agent skills. We first characterize the skill lifecycle and develop a threat taxonomy spanning repository admission","authors_text":"Priyanka Tiwari, Sanket Badhe","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2026-07-15T16:15:46Z","title":"Agent Skill Security: Threat Models, Attacks, Defenses, and Evaluation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.13987","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":"sha256:89fec3a469877f875d167328ef3f7e517b193903080ff7757a98de50312b337e","target":"record","created_at":"2026-07-16T01:23:18Z","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":"bc4453f5072b2df78ff77755ef7858a098f12f79664bc27add1681a357d0afeb","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2026-07-15T16:15:46Z","title_canon_sha256":"fc7d059b9a10345016310c78aca88e8f7bc046e4145753036463a0d7fb634e6a"},"schema_version":"1.0","source":{"id":"2607.13987","kind":"arxiv","version":1}},"canonical_sha256":"20ac541daf8a093730d6d2c218f300d92823a036fddd2dd49e94346c298235ea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"20ac541daf8a093730d6d2c218f300d92823a036fddd2dd49e94346c298235ea","first_computed_at":"2026-07-16T01:23:18.092837Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-16T01:23:18.092837Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Jkpu+XoDzxB9DCWO5UGFS57SKFDTKPdoYp1Fm2+H0EHVyb5UiOQnKfkjGZ8URe/YNGd73rVS9NIzx14CTYoJAg==","signature_status":"signed_v1","signed_at":"2026-07-16T01:23:18.093708Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.13987","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:89fec3a469877f875d167328ef3f7e517b193903080ff7757a98de50312b337e","sha256:2dd67ae9f999b34705dfa536a0ef88a5c2e718833a7eca7c2fd751f638745059"],"state_sha256":"117047e37bb48f141f0ab33e0c13ca2d0f5b5b0cbb69aac8c57419a2365d724f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tqstanHoMektX3KTAgptW9eiqtxOS9AZg7Y8n5bM53eA0EPk//10YjTRPRUyjTAWJZT6xdUHHwxBPkSAguSbAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T01:12:05.700240Z","bundle_sha256":"58b0c6a8c5e4ac16e5a9e2fa23b8d0468e3a8689ea6c7a02bad842efc5bde8ba"}}