GitHub action security: zizmor
Briefly

Zizmor is a new tool designed to identify security concerns in GitHub action workflows, making it easier for developers to lock down their actions effectively.
Continuous integration workflows can often have subtle flaws, which is where a tool like Zizmor shines; it highlights issues that may otherwise be overlooked.
William Woodruff, the creator of Zizmor, provided excellent support during my queries, demonstrating the value of responsive developers in open-source tools.
Many developers have under-maintained repositories, which could present security risks; Zizmor helps users identify and address vulnerabilities in these lesser-used actions.
Read at Nedbatchelder
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