{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:UMCRQ64YXPE22M22JTFQ75OMDD","short_pith_number":"pith:UMCRQ64Y","canonical_record":{"source":{"id":"2606.19535","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2026-06-17T19:28:30Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"5d8f0583ccd923832d1e6ca2092d3700f173a72e800366bfb7374379f4ee6f18","abstract_canon_sha256":"4d81cf3c4adbe605d77022dd0e0ed2c6621e0fb0dc38f0948d326b23f1e024e9"},"schema_version":"1.0"},"canonical_sha256":"a305187b98bbc9ad335a4ccb0ff5cc18d3de9d90a8f4516588228a4cba6762d9","source":{"kind":"arxiv","id":"2606.19535","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.19535","created_at":"2026-06-19T16:12:28Z"},{"alias_kind":"arxiv_version","alias_value":"2606.19535v1","created_at":"2026-06-19T16:12:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.19535","created_at":"2026-06-19T16:12:28Z"},{"alias_kind":"pith_short_12","alias_value":"UMCRQ64YXPE2","created_at":"2026-06-19T16:12:28Z"},{"alias_kind":"pith_short_16","alias_value":"UMCRQ64YXPE22M22","created_at":"2026-06-19T16:12:28Z"},{"alias_kind":"pith_short_8","alias_value":"UMCRQ64Y","created_at":"2026-06-19T16:12:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:UMCRQ64YXPE22M22JTFQ75OMDD","target":"record","payload":{"canonical_record":{"source":{"id":"2606.19535","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2026-06-17T19:28:30Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"5d8f0583ccd923832d1e6ca2092d3700f173a72e800366bfb7374379f4ee6f18","abstract_canon_sha256":"4d81cf3c4adbe605d77022dd0e0ed2c6621e0fb0dc38f0948d326b23f1e024e9"},"schema_version":"1.0"},"canonical_sha256":"a305187b98bbc9ad335a4ccb0ff5cc18d3de9d90a8f4516588228a4cba6762d9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-19T16:12:28.094664Z","signature_b64":"4Q0b18DuB0Rfw693YLMnt83eKRdgn9ITF3EWJKSRi1ZDF8ubDmvkUCe0IjVsJp3MrD1tjCptIIDgopqe9KadCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a305187b98bbc9ad335a4ccb0ff5cc18d3de9d90a8f4516588228a4cba6762d9","last_reissued_at":"2026-06-19T16:12:28.094306Z","signature_status":"signed_v1","first_computed_at":"2026-06-19T16:12:28.094306Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.19535","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":"2026-06-19T16:12:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kXqPZ2g7VnHktHYIOaJj7N4VcNZJPyqNtT3CmRNIcr56iNymnTmOgFp6xt2Xmqw03oX2rswxwNiwyJfs5KSpBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T19:08:59.435733Z"},"content_sha256":"68842b9aebcc88b6cc65afab69896f42eeac0711de248abb7d039f056cf0828c","schema_version":"1.0","event_id":"sha256:68842b9aebcc88b6cc65afab69896f42eeac0711de248abb7d039f056cf0828c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:UMCRQ64YXPE22M22JTFQ75OMDD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"FloatDoor: Platform-Triggered Backdoors in LLMs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG"],"primary_cat":"cs.CR","authors_text":"Felix M\\\"achtle, Jonas Sander, Nils Loose, Thomas Eisenbarth","submitted_at":"2026-06-17T19:28:30Z","abstract_excerpt":"Large language models (LLMs) are increasingly deployed in sensitive settings such as software engineering, where their outputs directly shape downstream artifacts. Recent work has shown that an identical model can produce measurably different outputs depending on the deployment platform, a consequence of non-associative floating-point arithmetic and divergent kernel implementations. We study the security implications of this platform-dependent variability and uncover a novel attack surface on LLM deployments. We introduce FloatDoor, the first input-independent, platform-triggered backdoor atta"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.19535","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/2606.19535/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":"2026-06-19T16:12:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jgkq9upZTN2Od77/ltmCaeC7Mb3tEohZcz7BSoIjKEFqdKZhyFATRSjGRoGIq3ObqXVT1JbQUbxnIOg+RzlhAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T19:08:59.436104Z"},"content_sha256":"3d902b4f7418d1b1dcceb7fa1e656dbc144383b5acf45773d3ebfec32a654b42","schema_version":"1.0","event_id":"sha256:3d902b4f7418d1b1dcceb7fa1e656dbc144383b5acf45773d3ebfec32a654b42"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UMCRQ64YXPE22M22JTFQ75OMDD/bundle.json","state_url":"https://pith.science/pith/UMCRQ64YXPE22M22JTFQ75OMDD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UMCRQ64YXPE22M22JTFQ75OMDD/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":"2026-06-23T19:08:59Z","links":{"resolver":"https://pith.science/pith/UMCRQ64YXPE22M22JTFQ75OMDD","bundle":"https://pith.science/pith/UMCRQ64YXPE22M22JTFQ75OMDD/bundle.json","state":"https://pith.science/pith/UMCRQ64YXPE22M22JTFQ75OMDD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UMCRQ64YXPE22M22JTFQ75OMDD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:UMCRQ64YXPE22M22JTFQ75OMDD","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":"4d81cf3c4adbe605d77022dd0e0ed2c6621e0fb0dc38f0948d326b23f1e024e9","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2026-06-17T19:28:30Z","title_canon_sha256":"5d8f0583ccd923832d1e6ca2092d3700f173a72e800366bfb7374379f4ee6f18"},"schema_version":"1.0","source":{"id":"2606.19535","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.19535","created_at":"2026-06-19T16:12:28Z"},{"alias_kind":"arxiv_version","alias_value":"2606.19535v1","created_at":"2026-06-19T16:12:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.19535","created_at":"2026-06-19T16:12:28Z"},{"alias_kind":"pith_short_12","alias_value":"UMCRQ64YXPE2","created_at":"2026-06-19T16:12:28Z"},{"alias_kind":"pith_short_16","alias_value":"UMCRQ64YXPE22M22","created_at":"2026-06-19T16:12:28Z"},{"alias_kind":"pith_short_8","alias_value":"UMCRQ64Y","created_at":"2026-06-19T16:12:28Z"}],"graph_snapshots":[{"event_id":"sha256:3d902b4f7418d1b1dcceb7fa1e656dbc144383b5acf45773d3ebfec32a654b42","target":"graph","created_at":"2026-06-19T16:12:28Z","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/2606.19535/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Large language models (LLMs) are increasingly deployed in sensitive settings such as software engineering, where their outputs directly shape downstream artifacts. Recent work has shown that an identical model can produce measurably different outputs depending on the deployment platform, a consequence of non-associative floating-point arithmetic and divergent kernel implementations. We study the security implications of this platform-dependent variability and uncover a novel attack surface on LLM deployments. We introduce FloatDoor, the first input-independent, platform-triggered backdoor atta","authors_text":"Felix M\\\"achtle, Jonas Sander, Nils Loose, Thomas Eisenbarth","cross_cats":["cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2026-06-17T19:28:30Z","title":"FloatDoor: Platform-Triggered Backdoors in LLMs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.19535","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":"sha256:68842b9aebcc88b6cc65afab69896f42eeac0711de248abb7d039f056cf0828c","target":"record","created_at":"2026-06-19T16:12:28Z","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":"4d81cf3c4adbe605d77022dd0e0ed2c6621e0fb0dc38f0948d326b23f1e024e9","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2026-06-17T19:28:30Z","title_canon_sha256":"5d8f0583ccd923832d1e6ca2092d3700f173a72e800366bfb7374379f4ee6f18"},"schema_version":"1.0","source":{"id":"2606.19535","kind":"arxiv","version":1}},"canonical_sha256":"a305187b98bbc9ad335a4ccb0ff5cc18d3de9d90a8f4516588228a4cba6762d9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a305187b98bbc9ad335a4ccb0ff5cc18d3de9d90a8f4516588228a4cba6762d9","first_computed_at":"2026-06-19T16:12:28.094306Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-19T16:12:28.094306Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4Q0b18DuB0Rfw693YLMnt83eKRdgn9ITF3EWJKSRi1ZDF8ubDmvkUCe0IjVsJp3MrD1tjCptIIDgopqe9KadCA==","signature_status":"signed_v1","signed_at":"2026-06-19T16:12:28.094664Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.19535","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:68842b9aebcc88b6cc65afab69896f42eeac0711de248abb7d039f056cf0828c","sha256:3d902b4f7418d1b1dcceb7fa1e656dbc144383b5acf45773d3ebfec32a654b42"],"state_sha256":"187fc22cd81f2d79d2ac18daf4c6dc0763765560826e187d70651ba3301e3c65"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P5j/egdkGG1b8vJAxpIgAfUhvYY5CkJxoIlCkc4kn/6a90u+97Qu16j2h1k3CSbQTTRChxq7NWGPR9oIjb70Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T19:08:59.438198Z","bundle_sha256":"ecff25aa8f7b71d9a49943fc565db75f2c26b42021023301639d1f532adbfc49"}}