diff --git a/ch08/tarfile_sample.py b/ch08/tarfile_sample.py
index 2a38668..615ae8e 100644
--- a/ch08/tarfile_sample.py
+++ b/ch08/tarfile_sample.py
@@ -8,4 +8,26 @@
 
 # 여러파일 해제하기
 with tarfile.open('mytext.tar') as mytar:
-    mytar.extractall()
+    
+    import os
+    
+    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(mytar)