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#supply-chain-security

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#supply-chain-security
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Use Dependabot's default cooldown before merging fresh package releases

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GitHub now waits three days before opening Dependabot version-update pull requests, reducing exposure to compromised or broken package releases. GitHub has changed Dependabot version updates so new package releases must sit in the registry for at least three days before Dependabot opens a version-update pull request. Security updates still open immediately. Use this as a low-friction supply-chain safety check. The default gives maintainers and the wider ecosystem time to flag compromised, yanked, or broken releases before they land in routine dependency-update PRs. What to do Leave the new default in place for most repositories. Keep security updates immediate; the cooldown applies to version updates, not urgent security fixes. Override the window in .github/dependabot.yml only when your release process has a clear reason. Watch high-risk ecosystems or critical services for packages that should use a longer cooldown. Best fit Repository type Suggested move Caveat --- --- --- Standard app repos Keep the three-day default Review lockfile-only bumps before merge Security-sensitive services Consider a longer cooldown for non-security updates Do not delay patched security advisories Fast-moving libraries Tune per ecosystem in dependabot.yml Document why the shorter window is acceptable
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Verify JDK Downloads in GitHub Actions with setup-java 5.5

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GitHub Actions setup-java 5.5 adds optional cryptographic signature verification for downloaded JDKs, plus Tencent Kona support and Maven workflow fixes. Use this when Java CI needs stronger supply-chain checks without replacing the standard setup-java action. Enable verify-signature: true for supported distributions such as Temurin and Microsoft, pin the action to v5.5.0 or its full commit SHA, and fail fast when a distribution cannot verify signatures instead of silently accepting an unchecked JDK download. This is a TOOL candidate, not a broad news post: it helps teams harden Java workflows, but it does not materially change the whole developer platform.
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