Enable secret scanning and push protection

README.md

@@ -207,6 +207,10 @@ Removing a repository from the YAML archives it instead of deleting it. Every re
 
 Every repository is managed with `delete_branch_on_merge = true`, so GitHub deletes a pull request's head branch once it is merged. A deleted branch can be restored from its pull request.
 
+### Secret Scanning
+
+Every repository is managed with secret scanning and push protection enabled, so GitHub alerts on committed secrets and blocks pushes containing them. Non-provider patterns and validity checks are not managed.
+
 Set it as source of truth:
 
 ```shell

terraform/modules/repository/main.tf

@@ -11,6 +11,16 @@ resource "github_repository" "this" {
   delete_branch_on_merge = true
   is_template            = var.repository.is_template
 
+  # advanced_security omitted: setting it errors on public repositories.
+  security_and_analysis {
+    secret_scanning {
+      status = "enabled"
+    }
+    secret_scanning_push_protection {
+      status = "enabled"
+    }
+  }
+
   # Contents
   dynamic "template" {
     for_each = var.repository.template == null ? [] : [var.repository.template]

terraform/modules/repository/tests/repository.tftest.hcl

@@ -33,6 +33,16 @@ run "name_only" {
     condition     = github_repository.this.delete_branch_on_merge
     error_message = "Repository must delete branches on merge."
   }
+
+  assert {
+    condition     = github_repository.this.security_and_analysis[0].secret_scanning[0].status == "enabled"
+    error_message = "Repository must enable secret scanning."
+  }
+
+  assert {
+    condition     = github_repository.this.security_and_analysis[0].secret_scanning_push_protection[0].status == "enabled"
+    error_message = "Repository must enable secret scanning push protection."
+  }
 }
 
 run "name_leading_dot" {