Moving it will not make it safer. Only proper security measures such as only allowing owner access to the zp-core folder will do that.
Anyway, if you are refering to the threads on this forum about that file being compromised, that was most likely caused by the site administrators not removing the setup files, not by someone actually accessing your server and the folder directly. (Unless, of course, you have no folder security. In which case it does not matter where you move it, it will still be vulnerable.)