diff --git a/privacy_guard/analysis/lia/lia_analysis_input.py b/privacy_guard/analysis/lia/lia_analysis_input.py
index 8817c4a..08c7273 100644
--- a/privacy_guard/analysis/lia/lia_analysis_input.py
+++ b/privacy_guard/analysis/lia/lia_analysis_input.py
@@ -1,4 +1,16 @@
-# (c) Meta Platforms, Inc. and affiliates. Confidential and proprietary.
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 # pyre-strict
 
diff --git a/privacy_guard/analysis/lia/lia_analysis_node.py b/privacy_guard/analysis/lia/lia_analysis_node.py
index ec0588c..2188dca 100644
--- a/privacy_guard/analysis/lia/lia_analysis_node.py
+++ b/privacy_guard/analysis/lia/lia_analysis_node.py
@@ -1,6 +1,19 @@
-# (c) Meta Platforms, Inc. and affiliates. Confidential and proprietary.
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 # pyre-strict
+
 import logging
 from dataclasses import dataclass
 from typing import List, Tuple
diff --git a/privacy_guard/analysis/tests/test_lia_analysis_input.py b/privacy_guard/analysis/tests/test_lia_analysis_input.py
index a5e9154..7296b45 100644
--- a/privacy_guard/analysis/tests/test_lia_analysis_input.py
+++ b/privacy_guard/analysis/tests/test_lia_analysis_input.py
@@ -1,7 +1,20 @@
-# (c) Meta Platforms, Inc. and affiliates. Confidential and proprietary.
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 # pyre-strict
 
+
 import unittest
 
 import numpy as np
diff --git a/privacy_guard/analysis/tests/test_lia_analysis_node.py b/privacy_guard/analysis/tests/test_lia_analysis_node.py
index 02ce044..a08263a 100644
--- a/privacy_guard/analysis/tests/test_lia_analysis_node.py
+++ b/privacy_guard/analysis/tests/test_lia_analysis_node.py
@@ -1,7 +1,20 @@
-# (c) Meta Platforms, Inc. and affiliates. Confidential and proprietary.
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 # pyre-strict
 
+
 import unittest
 
 import numpy as np
diff --git a/privacy_guard/analysis/tests/test_lia_attack_integration.py b/privacy_guard/analysis/tests/test_lia_attack_integration.py
index 3a061b0..bfb76e0 100644
--- a/privacy_guard/analysis/tests/test_lia_attack_integration.py
+++ b/privacy_guard/analysis/tests/test_lia_attack_integration.py
@@ -1,4 +1,16 @@
-# (c) Meta Platforms, Inc. and affiliates. Confidential and proprietary.
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 # pyre-strict
 
diff --git a/privacy_guard/attacks/lia_attack.py b/privacy_guard/attacks/lia_attack.py
index b680aaa..d07f063 100644
--- a/privacy_guard/attacks/lia_attack.py
+++ b/privacy_guard/attacks/lia_attack.py
@@ -1,6 +1,19 @@
-# (c) Meta Platforms, Inc. and affiliates. Confidential and proprietary.
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 # pyre-strict
+
 from typing import Dict, List
 
 import numpy as np
diff --git a/privacy_guard/attacks/tests/test_lia_attack.py b/privacy_guard/attacks/tests/test_lia_attack.py
index aaa79e0..5ff395c 100644
--- a/privacy_guard/attacks/tests/test_lia_attack.py
+++ b/privacy_guard/attacks/tests/test_lia_attack.py
@@ -1,4 +1,16 @@
-# (c) Meta Platforms, Inc. and affiliates. Confidential and proprietary.
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 # pyre-strict