diff --git a/test/towerops_web/components/cookie_consent_test.exs b/test/towerops_web/components/cookie_consent_test.exs
new file mode 100644
index 00000000..e5e980f5
--- /dev/null
+++ b/test/towerops_web/components/cookie_consent_test.exs
@@ -0,0 +1,61 @@
+defmodule ToweropsWeb.Components.CookieConsentTest do
+  use ExUnit.Case, async: true
+
+  import Phoenix.Component
+  import Phoenix.LiveViewTest
+
+  alias ToweropsWeb.Components.CookieConsent
+
+  describe "banner/1" do
+    test "renders consent banner when requires_consent is true" do
+      assigns = %{requires_consent: true}
+
+      html =
+        rendered_to_string(~H"""
+        <CookieConsent.banner requires_consent={@requires_consent} />
+        """)
+
+      assert html =~ ~s(id="cookie-consent-banner")
+      assert html =~ "We respect your privacy"
+      assert html =~ "essential cookies"
+      assert html =~ ~s(href="/privacy")
+      assert html =~ "Accept"
+    end
+
+    test "renders nothing when requires_consent is false" do
+      assigns = %{requires_consent: false}
+
+      html =
+        rendered_to_string(~H"""
+        <CookieConsent.banner requires_consent={@requires_consent} />
+        """)
+
+      assert html == ""
+    end
+
+    test "has proper accessibility attributes" do
+      assigns = %{requires_consent: true}
+
+      html =
+        rendered_to_string(~H"""
+        <CookieConsent.banner requires_consent={@requires_consent} />
+        """)
+
+      assert html =~ ~s(role="dialog")
+      assert html =~ ~s(aria-label="Cookie consent")
+      assert html =~ ~s(aria-live="polite")
+    end
+
+    test "has functioning accept button with data attribute" do
+      assigns = %{requires_consent: true}
+
+      html =
+        rendered_to_string(~H"""
+        <CookieConsent.banner requires_consent={@requires_consent} />
+        """)
+
+      assert html =~ ~s(data-cookie-consent="accept")
+      assert html =~ ~s(type="button")
+    end
+  end
+end
diff --git a/test/towerops_web/controllers/api/param_filter_test.exs b/test/towerops_web/controllers/api/param_filter_test.exs
new file mode 100644
index 00000000..45e6da62
--- /dev/null
+++ b/test/towerops_web/controllers/api/param_filter_test.exs
@@ -0,0 +1,53 @@
+defmodule ToweropsWeb.Api.ParamFilterTest do
+  use ExUnit.Case, async: true
+
+  alias ToweropsWeb.Api.ParamFilter
+
+  describe "strip_sensitive/1" do
+    test "removes sensitive identity fields from params" do
+      params = %{
+        "name" => "Test Device",
+        "ip_address" => "10.0.0.1",
+        "organization_id" => "org-123",
+        "id" => "device-456",
+        "inserted_at" => "2024-01-01T00:00:00Z"
+      }
+
+      result = ParamFilter.strip_sensitive(params)
+
+      assert result == %{"name" => "Test Device", "ip_address" => "10.0.0.1"}
+    end
+
+    test "preserves non-sensitive fields" do
+      params = %{"name" => "Keep", "description" => "Also keep", "tags" => ["a", "b"]}
+      assert params == ParamFilter.strip_sensitive(params)
+    end
+
+    test "handles empty map" do
+      assert %{} == ParamFilter.strip_sensitive(%{})
+    end
+
+    test "returns non-map input unchanged" do
+      assert "string" == ParamFilter.strip_sensitive("string")
+      assert nil == ParamFilter.strip_sensitive(nil)
+      assert 42 == ParamFilter.strip_sensitive(42)
+      assert [] == ParamFilter.strip_sensitive([])
+    end
+
+    test "removes all sensitive fields defined in @sensitive_fields" do
+      sensitive = ~w(id organization_id user_id created_by_id inserted_at updated_at)
+      params = Map.new(sensitive, &{&1, "value"})
+      params = Map.put(params, "safe_field", "keep")
+
+      result = ParamFilter.strip_sensitive(params)
+      assert result == %{"safe_field" => "keep"}
+    end
+
+    test "does not strip atom keys (sensitive_fields are strings)" do
+      # @sensitive_fields uses string keys, so atom keys pass through
+      params = %{name: "Test", organization_id: "org-123", id: "dev-1"}
+      result = ParamFilter.strip_sensitive(params)
+      assert result == params
+    end
+  end
+end
diff --git a/test/towerops_web/live/components/status_title_component_test.exs b/test/towerops_web/live/components/status_title_component_test.exs
new file mode 100644
index 00000000..810129a2
--- /dev/null
+++ b/test/towerops_web/live/components/status_title_component_test.exs
@@ -0,0 +1,28 @@
+defmodule ToweropsWeb.Live.Components.StatusTitleComponentTest do
+  use ExUnit.Case, async: true
+
+  import Phoenix.Component
+  import Phoenix.LiveViewTest
+
+  alias ToweropsWeb.Live.Components.StatusTitleComponent
+
+  describe "render/1" do
+    test "renders the status title watcher div" do
+      assigns = %{id: "status-title-watcher"}
+
+      html =
+        render_component(
+          fn inner_assigns ->
+            ~H"""
+            <.live_component module={StatusTitleComponent} id={@id} />
+            """
+          end,
+          assigns
+        )
+
+      assert html =~ ~s(id="status-title-watcher")
+      assert html =~ ~s(phx-hook="StatusTitle")
+      assert html =~ ~s(style="display: none;")
+    end
+  end
+end