diff --git a/monkey/tests/unit_tests/monkey_island/cc/server_utils/encryption/test_key_based_encryptor.py b/monkey/tests/unit_tests/monkey_island/cc/server_utils/encryption/test_key_based_encryptor.py
index 391002417..10803cff9 100644
--- a/monkey/tests/unit_tests/monkey_island/cc/server_utils/encryption/test_key_based_encryptor.py
+++ b/monkey/tests/unit_tests/monkey_island/cc/server_utils/encryption/test_key_based_encryptor.py
@@ -1,7 +1,9 @@
 from monkey_island.cc.server_utils.encryption import KeyBasedEncryptor
 
 PLAINTEXT = "password"
-PLAINTEXT_UTF8 = "slaptažodis"  # "password" in Lithuanian
+PLAINTEXT_UTF8_1 = "slaptažodis"  # "password" in Lithuanian
+PLAINTEXT_UTF8_2 = "弟"  # Japanese
+PLAINTEXT_UTF8_3 = "ж"  # Ukranian
 KEY = b"\x84\xd4qA\xb5\xd4Y\x9bH.\x14\xab\xd8\xc7+g\x12\xfa\x80'%\xfd#\xf8c\x94\xb9\x96_\xf4\xc51"
 
 kb_encryptor = KeyBasedEncryptor(KEY)
@@ -13,7 +15,19 @@ def test_encrypt_decrypt_string_with_key():
     assert decrypted == PLAINTEXT
 
 
-def test_encrypt_decrypt_string_utf8_with_key():
-    encrypted = kb_encryptor.encrypt(PLAINTEXT_UTF8)
+def test_encrypt_decrypt_string_utf8_with_key_1():
+    encrypted = kb_encryptor.encrypt(PLAINTEXT_UTF8_1)
     decrypted = kb_encryptor.decrypt(encrypted)
-    assert decrypted == PLAINTEXT_UTF8
+    assert decrypted == PLAINTEXT_UTF8_1
+
+
+def test_encrypt_decrypt_string_utf8_with_key_2():
+    encrypted = kb_encryptor.encrypt(PLAINTEXT_UTF8_2)
+    decrypted = kb_encryptor.decrypt(encrypted)
+    assert decrypted == PLAINTEXT_UTF8_2
+
+
+def test_encrypt_decrypt_string_utf8_with_key_3():
+    encrypted = kb_encryptor.encrypt(PLAINTEXT_UTF8_3)
+    decrypted = kb_encryptor.decrypt(encrypted)
+    assert decrypted == PLAINTEXT_UTF8_3