diff --git a/client/site_tests/security_StatefulPermissions/security_StatefulPermissions.py b/client/site_tests/security_StatefulPermissions/security_StatefulPermissions.py
index bd83dfa..a8b7f44 100644
--- a/client/site_tests/security_StatefulPermissions/security_StatefulPermissions.py
+++ b/client/site_tests/security_StatefulPermissions/security_StatefulPermissions.py
@@ -20,6 +20,7 @@
     # Note that chronos permissions in /home are covered in greater detail
     # by 'security_ProfilePermissions'.
     _masks_byuser = {"adm": [],
+                     "attestation": ["/unencrypted/preserve/attestation.epb"],
                      "avfs": [],
                      "bin": [],
                      "bluetooth": ["/encrypted/var/lib/bluetooth"],