Add security scorecard

Author: son-oz

.github/workflows/scorecard.yml

@@ -0,0 +1,57 @@
+---
+# This workflow uses actions that are not certified by GitHub. They are provided
+# by a third-party and are governed by separate terms of service, privacy
+# policy, and support documentation.
+name: Scorecard supply-chain security
+on:
+  # For Branch-Protection check. Only the default branch is supported. See
+  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#branch-protection
+  branch_protection_rule:
+  # To guarantee Maintained check is occasionally updated. See
+  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#maintained
+  schedule:
+    - cron: 15 21 * * 4
+  push:
+    branches:
+      - main
+# Declare default permissions as read only.
+permissions: read-all
+jobs:
+  analysis:
+    name: Scorecard analysis
+    runs-on: ubuntu-latest
+    permissions:
+      # Needed to upload the results to code-scanning dashboard.
+      security-events: write
+      # Needed to publish results and get a badge (see publish_results below).
+      id-token: write
+      # comment the permissions below if installing in a public repository.
+      # contents: read
+      # actions: read
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@6c439dc8bdf85cadbbce9ed30d1c7b959517bc49  # v2.12.2
+        with:
+          egress-policy: audit
+      - name: Checkout code
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.5.4
+        with:
+          persist-credentials: false
+      - name: Run analysis
+        uses: ossf/scorecard-action@05b42c624433fc40578a4040d5cf5e36ddca8cde  # v2.4.2
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          publish_results: true
+      # Upload the results as artifacts (optional). Commenting out will disable uploads of run results in SARIF
+      # format to the repository Actions tab.
+      - name: Upload artifact
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02  # v4.6.2
+        with:
+          name: SARIF file
+          path: results.sarif
+          retention-days: 5
+      - name: Upload SARIF to GitHub Code Scanning
+        uses: github/codeql-action/upload-sarif@51f77329afa6477de8c49fc9c7046c15b9a4e79d  # v3.29.5
+        with:
+          sarif_file: results.sarif

README.md

@@ -1,5 +1,7 @@
 # Event Scanner
 
+[![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/OpenZeppelin/event-scanner/badge)](https://api.securityscorecards.dev/projects/github.com/OpenZeppelin/event-scanner)
+
 > ⚠️ **WARNING: ACTIVE DEVELOPMENT** ⚠️
 >
 > This project is under active development and likely contains bugs. APIs and behaviour may change without notice. Use at your own risk.