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Santiago Torres-Arias

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An Industry Interview Study of Software Signing for Supply Chain SecurityUSENIX Security '252025-08-13
Eighteen semi‑structured interviews across 13 organizations produce a refined software factory model that maps where signatures are created versus where they…
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Open Source Malware or a Vulnerability? The Philosophical Debate and How To MitigateKubeCon + CloudNativeCon Europe 20252025-04-01
Claims that the ecosystem already hosts 828,000 malicious components and that attackers publish about 18,000 new packages per week (mostly npm, then Python)…
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Lightning Talk: Software Dark Matter is the Enemy of Software TransparencyCloudNativeSecurityCon North America 20232023-02-01
Claims that untracked files — called software dark matter — make SBOMs incomplete and reduce scanner utility. Uses the static analysis tool Trevi and a…
Lightning on
Closing + Community AwardsSigstoreCon North America 20222022-10-25
GitHub issues collect nominations, people vote with emojis, and the TSC picks winners across categories; winners include Best user adopter (GitHub generators…
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Welcome + Opening RemarksSigstoreCon North America 20222022-10-25
Conference opens by announcing General availability for Sigstore with specific promises: heading 1.0 for recore and fusio, a public-good instance SLA of 99.5%…
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Achieving End-To-End Software Supply Chain Security With in-totoKubeCon + CloudNativeCon North America 20222022-10-24
Claims that in-toto provides end-to-end provenance that ties Git commits, PR reviews, tags, builds and OCI images into verifiable artifacts; implementations…
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State of the Art Supply Chain SecuritySupplyChainSecurityCon North America 20212021-10-11
Claim: a transparent, compromise‑resilient supply chain is practical today. Implementation stitches in-toto, TUF, and SigStore (cosign/fulcio/rekor) into CI/CD…
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Software Supply Chain SecurityContinuous Delivery Summit 2019 - San Diego2019-11-18
Industry effort defines a concrete pipeline: producers publish artifact metadata into repositories, consumers enforce policies that check identities, hashes…
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Securing the Software Supply Chain with in-totoKubeCon + CloudNativeCon North America 20192019-11-18
in-toto provides an explicit supply-chain model that declares steps, participants and accepted inputs then records what actually happens using layout and link…
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Using TUF and in-toto to Tighten the Release Process.KubeCon + CloudNativeCon North America 20192019-11-18
Describes a concrete pipeline hardening: use TUF to enforce root / targets / snapshot / timestamp roles with separated keys, threshold signing and built-in…
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On Omitting Commits and Committing Omissions: Preventing Git Metadata...USENIX Security '162016-08-10
Catalogs seven metadata-manipulation attacks and demonstrates how tampering with Git reference files enables subtle exploits like teleport attack and rollback…
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