~/talks

Billy Lynch

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Breaking Up with Long-lived Secrets: Secure Automation in the Mode...Open Source SecurityCon North America 20252025-11-10
Long‑lived pipeline credentials remain an Achilles’ heel; replacing them with short‑lived, context‑bound tokens issued via OIDC federation lets CI systems…
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Where Should Source Attestations Live? Exploring Storage StrategiesOpen Source SecurityCon North America 20252025-11-10
Compares three concrete storage patterns for SLSA source attestations: keep attestations inside the git repo using Git notes / ref attestations, push them to…
Lightning on
Securing OIDC Federation in CI/CD WorkflowsOpen Source Summit North America 20252025-06-23
Explains how OIDC tokens from GitHub Actions, GitLab and Kubernetes are exchanged via an STS-style federation to get short-lived cloud credentials, and shows a…
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Billy and Eddie's Declassified Git Survival GuideOpen Source Summit North America 20252025-06-23
Covers concrete rescue steps: use git reflog as safety net to recover dropped commits, run git fetch vs git pull to see origin/main, resolve conflicts with git…
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Securing Git Repositories with GittufSupplyChainSecurityCon @ Open Source Summit North America 20242024-04-16
Gittuf embeds signed policy metadata inside Git refs so repositories carry verifiable rules and a reference state log that records every ref update, signed and…
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Growing the Chain: Trusting Build Provenance from UserspaceCloudOpen @ Open Source Summit Europe 20232023-09-19
Explains how to trust build provenance produced in user-controllable CI by linking artifact metadata to CI configuration and build systems, using Sigstore OIDC…
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Growing the Chain: Trusting Build Provenance from UserspaceOpen Source Summit Europe 20232023-09-19
Shows how to link an artifact to CI config and the runner by using Sigstore + OIDC to mint short‑lived keys and sign provenance, and by applying SLSA levels to…
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Identity-based Source Integrity with GitsigncdCon + GitOpsCon 20232023-05-08
Explains how Gitsign applies Sigstore’s keyless model to Git commits using OIDC and ephemeral keys, issuing 10-minute certificates via Fulcio and recording…
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Lightning Talk: Securing Your Source Repositories - 5 Tips to Get Started!CloudNativeSecurityCon North America 20232023-02-01
Enable account two-factor authentication (Google Authenticator or U2F keys) and expect platforms to enforce it; require protected branches with two-person…
Lightning on
Source Attestations with GitsignCloud Native SecurityCon North America 20222022-10-24
Gitsign adds verifiable attestations to git commits by storing signed blobs in special refs inside the repo, using the Sigstore keyless flow and Rekor log so…
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Gitsign – Keyless Git Commit SigningSupplyChainSecurityCon at Open Source Summit Europe 20222022-09-13
Gitsign brings keyless signing to Git by generating ephemeral key pairs, exchanging an OIDC token with Fulcio to obtain short-lived certs (10 minute lifetime)…
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What a Life! - Understanding the Lifecycle of a Tekton PipelinecdCon 20222022-06-07
Tekton controller resolves and pins image to digest for reproducibility and forensics, then creates a TaskRun per task and a Pod per TaskRun, with each step…
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