SynthGuard-ReleaseBench: Locked-Audit Evidence for Synthetic Tabular Data Releases

[2608.14753] SynthGuard-ReleaseBench: Locked-Audit Evidence for Synthetic Tabular Data Releases Skip to main content Search Submit Donate Log in Search arXiv Press Enter to search · Advanced search Computer Science > Cryptography and Security arXiv:2608.14753 (cs) [Submitted on 14 Aug 2026] Title: SynthGuard-ReleaseBench: Locked-Audit Evidence for Synthetic Tabular Data Releases Authors: Jeffery Opoku , David Banahene View a PDF of the paper titled SynthGuard-ReleaseBench: Locked-Audit Evidence for Synthetic Tabular Data Releases, by Jeffery Opoku and David Banahene View PDF HTML (experimental) Abstract: Synthetic tabular data are often judged by realism, privacy, or downstream-task scores. Those scores do not answer whether a proposed release is supported for a named use, population, and threat model. We introduce SynthGuard-ReleaseBench, an audit framework that locks the use, candidate panel, tolerances, and audit schedule before evaluation. It compares real-trained and synthetic-trained workflows on protected data, gives simultaneous finite-sample bounds for bounded loss gaps, requires controls, and keeps utility, empirical privacy risk, mechanism claims, and human release authority separate. Across four American Community Survey studies, five non-ACS records, two chronological diagnostics, and a sealed prototype, the benchmark retains favorable, unfavorable, and excluded outcomes. Transparent baselines pass some locked audits; compact learned models fail under the declared budgets; a health-table case is excluded because its negative control passes. A post-audit scaling arm, repeated across three generation seeds, shows the same locked criterion admitting those learned models once they are fit on enough data while still rejecting a dependence-destroying control at every size, so the criterion discriminates rather than merely rejects; the same repetition withdraws a finer single-seed ordering. The theory adds a pre-audit sample-size rule, variance-adaptive and anytime-valid certificates that tighten the bound two to ten times on the same locked evidence, a temporal certificate for time-ordered audits, and two lower bounds: ordinary bounded queries reconstruct a protected audit once the query budget reaches its size, and the panel-size correction is necessary rather than conservative. The contribution is a reproducible workflow for use-specific release evidence, not a claim that any generator is private, safe, or deployment-ready. Comments: 45 pages, 20 figures, 11 tables. Software and evidence archive with locked configurations, tests, and a fail-closed release-gate validator archived at Zenodo, DOI https://doi.org/10.5281/zenodo.21909680 Subjects: Cryptography and Security (cs.CR) ; Methodology (stat.ME) MSC classes: 62-04, 62P99 Cite as: arXiv:2608.14753 [cs.CR] (or arXiv:2608.14753v1 [cs.CR] for this version) https://doi.org/10.48550/arXiv.2608.14753 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Jeffery Opoku [ view email ] [v1] Fri, 14 Aug 2026 03:12:17 UTC (3,125 KB) Full-text links: Access Paper: View a PDF of the paper titled SynthGuard-ReleaseBench: Locked-Audit Evidence for Synthetic Tabular Data Releases, by Jeffery Opoku and David Banahene View PDF HTML (experimental) TeX Source view license Current browse context: cs.CR < prev | next > new | recent | 2026-08 Change to browse by: cs stat stat.ME References & Citations NASA ADS Google Scholar Semantic Scholar export BibTeX citation Loading... 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