A week ago, somebody added malicious code to the tj-actions/changed-files GitHub Action. If you used the compromised action, it would leak secrets to your build log. Those build logs are public for public repositories, so anybody could see your secrets. Scary! Mutable vs immutable references This attack was possible because it’s common practice to refer to tags in a GitHub Actions workflow, for example:jobs: changed_files: ... steps: - name: Get changed files id: changed-files uses: tj-actions/c...