Justin Hutchings
Director of Product Management for supply chain security. I manage the team that's behind Dependabot, the Advisory Database, and the dependency graph. Twitter: https://twitter.com/jhutchings0
Yarn now supports security alerts for public and private repositories.
GitHub security alerts help developers stay on top of vulnerabilities that impact their dependencies. JavaScript developers already receive alerts for their NPM-based projects that use package.json and package-lock.json manifests. Now developers who use Yarn for dependency management will also receive security alerts for any vulnerable dependencies listed in their yarn.lock manifests.

Learn more about security alerts
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In July, we experienced eight incidents that resulted in degraded performance across GitHub services.
In June, we experienced six incidents that resulted in degraded performance across GitHub services.