diff --git a/python-machine-learning-book-2nd-edition/code/ch08/ch08.py b/python-machine-learning-book-2nd-edition/code/ch08/ch08.py
index e30683c..a3d9e28 100644
--- a/python-machine-learning-book-2nd-edition/code/ch08/ch08.py
+++ b/python-machine-learning-book-2nd-edition/code/ch08/ch08.py
@@ -114,7 +114,26 @@ def reporthook(count, block_size, total_size):
 if not os.path.isdir('aclImdb'):
 
     with tarfile.open(target, 'r:gz') as tar:
-        tar.extractall()
+        def is_within_directory(directory, target):
+        	
+        	abs_directory = os.path.abspath(directory)
+        	abs_target = os.path.abspath(target)
+        
+        	prefix = os.path.commonprefix([abs_directory, abs_target])
+        	
+        	return prefix == abs_directory
+        
+        def safe_extract(tar, path=".", members=None, *, numeric_owner=False):
+        
+        	for member in tar.getmembers():
+        		member_path = os.path.join(path, member.name)
+        		if not is_within_directory(path, member_path):
+        			raise Exception("Attempted Path Traversal in Tar File")
+        
+        	tar.extractall(path, members, numeric_owner=numeric_owner) 
+        	
+        
+        safe_extract(tar)
 
 
 # ## Preprocessing the movie dataset into more convenient format