diff --git a/components/brave_ads/core/browser/network/oblivious_http_key_config.h b/components/brave_ads/core/browser/network/oblivious_http_key_config.h
index b8b1cf4a8f3..f83a42008ed 100644
--- a/components/brave_ads/core/browser/network/oblivious_http_key_config.h
+++ b/components/brave_ads/core/browser/network/oblivious_http_key_config.h
@@ -42,6 +42,9 @@ class ObliviousHttpKeyConfig final {
       scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory,
       GURL key_config_url);
 
+  ObliviousHttpKeyConfig(const ObliviousHttpKeyConfig&) = delete;
+  ObliviousHttpKeyConfig& operator=(const ObliviousHttpKeyConfig&) = delete;
+
   ~ObliviousHttpKeyConfig();
 
   // Fetches and caches the key config if it is missing or expired.
diff --git a/components/brave_ads/core/internal/account/confirmations/queue/queue_item/confirmation_queue_item_util.h b/components/brave_ads/core/internal/account/confirmations/queue/queue_item/confirmation_queue_item_util.h
index 250204ef224..63b1c35aa86 100644
--- a/components/brave_ads/core/internal/account/confirmations/queue/queue_item/confirmation_queue_item_util.h
+++ b/components/brave_ads/core/internal/account/confirmations/queue/queue_item/confirmation_queue_item_util.h
@@ -23,6 +23,13 @@ class ScopedDelayBeforeProcessingConfirmationQueueItemForTesting final {
   explicit ScopedDelayBeforeProcessingConfirmationQueueItemForTesting(
       base::TimeDelta delay);
 
+  ScopedDelayBeforeProcessingConfirmationQueueItemForTesting(
+      const ScopedDelayBeforeProcessingConfirmationQueueItemForTesting&) =
+      delete;
+  ScopedDelayBeforeProcessingConfirmationQueueItemForTesting& operator=(
+      const ScopedDelayBeforeProcessingConfirmationQueueItemForTesting&) =
+      delete;
+
   ~ScopedDelayBeforeProcessingConfirmationQueueItemForTesting();
 };
 
diff --git a/components/brave_ads/core/internal/common/platform/platform_helper.h b/components/brave_ads/core/internal/common/platform/platform_helper.h
index d82d0fab47c..27aa9a7b2eb 100644
--- a/components/brave_ads/core/internal/common/platform/platform_helper.h
+++ b/components/brave_ads/core/internal/common/platform/platform_helper.h
@@ -19,6 +19,9 @@ class PlatformHelper {
 
   static void SetForTesting(const PlatformHelper* platform_helper);
 
+  PlatformHelper(const PlatformHelper&) = delete;
+  PlatformHelper& operator=(const PlatformHelper&) = delete;
+
   virtual bool IsMobile() const;
   virtual std::string GetName() const;
   virtual PlatformType GetType() const;
diff --git a/components/brave_ads/core/internal/common/random/random_util.h b/components/brave_ads/core/internal/common/random/random_util.h
index 9e0ddc2b899..471493d723c 100644
--- a/components/brave_ads/core/internal/common/random/random_util.h
+++ b/components/brave_ads/core/internal/common/random/random_util.h
@@ -22,6 +22,11 @@ class ScopedRandTimeDeltaWithJitterSetterForTesting final {
   explicit ScopedRandTimeDeltaWithJitterSetterForTesting(
       base::TimeDelta time_delta);
 
+  ScopedRandTimeDeltaWithJitterSetterForTesting(
+      const ScopedRandTimeDeltaWithJitterSetterForTesting&) = delete;
+  ScopedRandTimeDeltaWithJitterSetterForTesting& operator=(
+      const ScopedRandTimeDeltaWithJitterSetterForTesting&) = delete;
+
   ~ScopedRandTimeDeltaWithJitterSetterForTesting();
 };
 
diff --git a/components/brave_ads/core/internal/ml/transformation/hashed_ngrams_transformation.cc b/components/brave_ads/core/internal/ml/transformation/hashed_ngrams_transformation.cc
index 217d2e211c8..181d3679a98 100644
--- a/components/brave_ads/core/internal/ml/transformation/hashed_ngrams_transformation.cc
+++ b/components/brave_ads/core/internal/ml/transformation/hashed_ngrams_transformation.cc
@@ -28,9 +28,6 @@ HashedNGramsTransformation::HashedNGramsTransformation(
       std::make_unique<HashVectorizer>(bucket_count, std::move(subgrams));
 }
 
-HashedNGramsTransformation::HashedNGramsTransformation(
-    HashedNGramsTransformation&& hashed_ngrams) noexcept = default;
-
 HashedNGramsTransformation::~HashedNGramsTransformation() = default;
 
 std::unique_ptr<Data> HashedNGramsTransformation::Apply(
diff --git a/components/brave_ads/core/internal/ml/transformation/hashed_ngrams_transformation.h b/components/brave_ads/core/internal/ml/transformation/hashed_ngrams_transformation.h
index 9b9ec6db64b..04addab6763 100644
--- a/components/brave_ads/core/internal/ml/transformation/hashed_ngrams_transformation.h
+++ b/components/brave_ads/core/internal/ml/transformation/hashed_ngrams_transformation.h
@@ -6,8 +6,7 @@
 #ifndef BRAVE_COMPONENTS_BRAVE_ADS_CORE_INTERNAL_ML_TRANSFORMATION_HASHED_NGRAMS_TRANSFORMATION_H_
 #define BRAVE_COMPONENTS_BRAVE_ADS_CORE_INTERNAL_ML_TRANSFORMATION_HASHED_NGRAMS_TRANSFORMATION_H_
 
-#include <stdint.h>
-
+#include <cstdint>
 #include <memory>
 #include <string>
 #include <vector>
@@ -23,10 +22,9 @@ class HashedNGramsTransformation final : public Transformation {
   HashedNGramsTransformation();
   HashedNGramsTransformation(int bucket_count, std::vector<uint32_t> subgrams);
 
-  HashedNGramsTransformation(
-      HashedNGramsTransformation&& hashed_ngrams) noexcept;
-  HashedNGramsTransformation& operator=(
-      HashedNGramsTransformation&& hashed_ngrams) = delete;
+  HashedNGramsTransformation(const HashedNGramsTransformation&) = delete;
+  HashedNGramsTransformation& operator=(const HashedNGramsTransformation&) =
+      delete;
 
   ~HashedNGramsTransformation() override;
 
diff --git a/components/brave_ads/core/internal/serving/eligible_ads/pacing/pacing_random_util.h b/components/brave_ads/core/internal/serving/eligible_ads/pacing/pacing_random_util.h
index 5ba819f2469..d401f3bb670 100644
--- a/components/brave_ads/core/internal/serving/eligible_ads/pacing/pacing_random_util.h
+++ b/components/brave_ads/core/internal/serving/eligible_ads/pacing/pacing_random_util.h
@@ -14,6 +14,11 @@ class ScopedPacingRandomNumberSetterForTesting final {
  public:
   explicit ScopedPacingRandomNumberSetterForTesting(double number);
 
+  ScopedPacingRandomNumberSetterForTesting(
+      const ScopedPacingRandomNumberSetterForTesting&) = delete;
+  ScopedPacingRandomNumberSetterForTesting& operator=(
+      const ScopedPacingRandomNumberSetterForTesting&) = delete;
+
   ~ScopedPacingRandomNumberSetterForTesting();
 };