diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index cdbae0e..a18b24a 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -19,6 +19,9 @@ jobs:
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@68827325e0b33c7199eb31dd4e31fbe9023e06e3
+      
+      - name: Install Cosign
+        uses: sigstore/cosign-installer@e1523de7571e31dbe865fd2e80c5c7c23ae71eb4
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@2b51285047da1547ffb1b2203d8be4c0af6b1f20
@@ -49,3 +52,31 @@ jobs:
           tags: nataliagranato/linuxtips-giropops-senhas:${{ steps.generate-tag.outputs.tag }}
           labels: ${{ steps.meta.outputs.labels }}
           platforms: linux/amd64,linux/arm64
+
+
+      - name: Run Trivy vulnerability scanner
+        uses: aquasecurity/trivy-action@062f2592684a31eb3aa050cc61e7ca1451cecd3d
+        with:
+          image-ref: nataliagranato/linuxtips-giropops-senhas:latest
+          format: 'sarif'
+          severity: 'UNKNOWN,LOW,MEDIUM,HIGH,CRITICAL'
+          output: 'trivy-results.sarif'
+
+      - name: Upload Trivy scan results to GitHub Security tab
+        uses: github/codeql-action/upload-sarif@v3
+        if: always()
+        with:
+          sarif_file: 'trivy-results.sarif'
+
+      - name: Sign image with a key
+        run: |
+          images=""
+          for tag in ${TAGS}; do
+            images+="${tag}@${DIGEST} "
+          done
+          cosign sign --yes --key env://COSIGN_PRIVATE_KEY $images
+        env:
+          TAGS: ${{ steps.meta.outputs.tags }}
+          COSIGN_PRIVATE_KEY: ${{ secrets.COSIGN_PRIVATE_KEY }}
+          COSIGN_PASSWORD: ${{ secrets.COSIGN_PASSWORD }}
+          DIGEST: ${{ steps.build-and-push.outputs.digest }}