~/talks

Zach Steindler

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titleconferencedate
Supply Chain Attacks on Open Source: What's Happening, What...USENIX Security '262026-08-12
Explains how the Shy Halud campaign used phishing and poisoned GitHub Actions caches to add malware to hundreds of popular NPM packages within hours, then used…
Talk on
Securing Packages in npm, Homebrew, PyPI, Maven Central, and...USENIX Security '252025-08-13
Package registries move from brittle GPG signatures to Sigstore attestations that embed nonfalsifiable links to source commit, build instructions, and build…
Talk on
npm and Sigstore: Provenance Comes to the World's Largest OSS EcosystemBlack Hat USA 20232023-08-05
npm adds verifiable build provenance to a registry that sees ~70 billion requests/month and ~40k daily publishes, offering a public beta since April with…
Talk on
Bringing Provenance to All of Open Source: Lessons from Npm’s Sigstore IntegrationSupplyChainSecurityCon @ OSS NA 20232023-05-10
npm ties a package back to exact commits and build instructions for the registry that serves 70 billion packages per month by adding a flag npm publish…
Talk on
Lightning Talk: Security Considerations with Fulcio and OIDC JWTsSigstoreCon North America 20222022-10-25
npm integrates with Fulcio in a keyless signing flow where a CI system sends an OIDC JWT and Fulcio embeds those claims into the signing certificate, enabling…
Lightning on
Exchanging Data Wirelessly with Bluetooth LE and ZigBeePyOhio 20162016-07-30
Python connects to Bluetooth LE using the btle library and BlueZ-like tools, discovers device MACs, reads service UUIDs and characteristics, and must enable…
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